{"id":162,"date":"2020-09-15T15:42:11","date_gmt":"2020-09-15T10:42:11","guid":{"rendered":"https:\/\/talib.pk\/test-preparation\/?p=162"},"modified":"2020-09-15T15:42:11","modified_gmt":"2020-09-15T10:42:11","slug":"1st-year-chemistry-chemical-equilibrium-mcqs","status":"publish","type":"post","link":"https:\/\/talib.pk\/test-preparation\/1st-year-chemistry-chemical-equilibrium-mcqs\/","title":{"rendered":"1st Year Chemistry Chemical Equilibrium MCQs"},"content":{"rendered":"<div class=\"28d95f43054b69d67289d6316e9506d8\" data-index=\"1\" style=\"float: none; margin:12px 0 12px 0; text-align:center;\">\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- talib-new -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-3438155045791616\"\r\n     data-ad-slot=\"6774242552\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n(adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>If you are searching for Entry Test MCQs then the 1st Year Chemistry Chemical Equilibrium MCQs are available here. This chapter is about Chemical Equilibrium. There are two types of Chemical Reactions i.e. Reversible and Irreversible reactions. Reversible Reactions are in the format of Chemical Equilibrium. For the chemical reactions, the law of Mass Action is very significant. The reactions in the equilibrium state are stated by Equilibrium constant. There are some advantages of equilibrium constants. Le-Chatelier&#8217;s principle gives some importance to Chemical Equilibrium. Applications of Chemical Equilibrium consists of the Synthesis of Ammonia and Preparation of Sulphur Trioxide. Acids and bases have their own Ionization Constants. Lowry Bronsted gave the concepts of acid and base. Some applications are Common Ion Effect and Buffer Solutions. Solubility product has some advantages in Chemical Reactions. So, you can get the important MCQs of this chapter on this page below.<\/p>\n<h2 style=\"text-align: center;\">1st Year Chemistry Chemical Equilibrium MCQs<\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-373 aligncenter\" src=\"https:\/\/talib.pk\/test-preparation\/wp-content\/uploads\/2020\/09\/Chemistry-3.jpg\" alt=\"1st Year Chemistry Chemical Equilibrium MCQs\" width=\"300\" height=\"300\" srcset=\"https:\/\/talib.pk\/test-preparation\/wp-content\/uploads\/2020\/09\/Chemistry-3.jpg 300w, https:\/\/talib.pk\/test-preparation\/wp-content\/uploads\/2020\/09\/Chemistry-3-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<h2><strong>KEY POINTS<\/strong><\/h2>\n<div class=\"box info  alignleft\" style=\"width:100%\"><div class=\"box-inner-block\"><i class=\"fa tie-shortcode-boxicon\"><\/i>\n\t\t\t\n<div class=\"lightbulb tie-list-shortcode\">\n<ul>\n<li>Reversible and Irreversible Reactions<\/li>\n<li>State of Chemical Equilibrium<\/li>\n<li>Law of mass action<\/li>\n<li>Equilibrium Constants<\/li>\n<li>Applications of Equilibrium Constants<\/li>\n<li>Le-Chatilier&#8217;s Principle<\/li>\n<li>Applications of Chemical Equilibrium in Industry<\/li>\n<li>Ionic Product of Water<\/li>\n<li>Ionization Constants of Acids\/Base<\/li>\n<li>Lowry Bronsted Acid-Base Concept<\/li>\n<li>Common Ion Effect<\/li>\n<li>Buffer Solution<\/li>\n<li>Buffer Capacity<\/li>\n<li>Solubility Product<\/li>\n<\/ul>\n<\/div>\n\t\t\t<\/div><\/div>\n<p>&nbsp;<\/p>\n<p><strong><span style=\"color: #ff6600;\">Question#1.<\/span> What will be the pH of 1.0 mol dm<sup>-3<\/sup> of H<sub>2<\/sub>X, which is only 50% dissociated?<\/strong><\/p>\n<ul>\n<li>1<\/li>\n<li>0<strong><br \/>\n<\/strong><\/li>\n<li>2<\/li>\n<li>Less than 0<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>0<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#2<\/span>. What will be the pH of 1.0 mol dm<sup>-3<\/sup> of NH<sub>4<\/sub>OH, which is 1% dissociated?<\/strong><\/p>\n<ul>\n<li>2<\/li>\n<li>12<strong><br \/>\n<\/strong><\/li>\n<li>0<\/li>\n<li>2.7<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>12<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#3<\/span>. Buffer solutions are used in except?<\/strong><\/p>\n<ul>\n<li>Clinical analysis<\/li>\n<li>Nutrition<\/li>\n<li>Soil science<\/li>\n<li>Qualitative analysis<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Qualitative analysis<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#4<\/span>. Buffer action can be explained by except?<\/strong><\/p>\n<ul>\n<li>Common ion effect<\/li>\n<li>Le-Chatelier\u2019s principle<\/li>\n<li>Law of mass action<\/li>\n<li>Solubility product<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Solubility product<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#5<\/span>. At equilibrium, the concentration of reactants and products are:<\/strong><\/p>\n<ul>\n<li>Constant<strong><br \/>\n<\/strong><\/li>\n<li>Maximum<\/li>\n<li>Different<\/li>\n<li>Equal<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Constant<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#6<\/span>. In the reaction A<sub>2(g)<\/sub> + 4B<sub>2(g)<\/sub> \u21cc 2AB<sub>4(g)<\/sub> such that \u0394H &lt; 0;the formation of AB<sub>4(g)<\/sub>will be favoured at:<\/strong><\/p>\n<ul>\n<li>Low temperature and high pressure<\/li>\n<li>High temperature and low pressure<\/li>\n<li>Low temperature and low pressure<\/li>\n<li>High temperature and high pressure<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Low temperature and high pressure<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#7<\/span>. Consider the reaction PCl<sub>5<\/sub> <sub>(g)<\/sub> \u21cc PCl<sub>3(g)<\/sub> +Cl<sub>2<\/sub> in a closed container at equilibrium. At a fixed temperature, what will be the effect of adding more PCl<sub>5<\/sub> on the equilibrium constant?<\/strong><\/p>\n<ul>\n<li>It increases<\/li>\n<li>It remains unaffected<\/li>\n<li>It decreases<\/li>\n<li>Can\u2019t be predicted without K<sub>P<\/sub><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>It remains unaffected<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#8<\/span>. The oxidation of SO<sub>2<\/sub> to SO<sub>3<\/sub> is an exothermic reaction. The yield of SO<sub>3<\/sub> will be maximum if:<\/strong><\/p>\n<ul>\n<li>Temperature is increased and pressure is kept constant<\/li>\n<li>Temperature is reduced and pressure is increased<\/li>\n<li>Both temperature and pressure are increased<\/li>\n<li>Both temperature and pressure are decreased<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Temperature is reduced and pressure is increased<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#9<\/span>. If the concentration of salt is greater than the acid in buffer solution, then the?<\/strong><\/p>\n<ul>\n<li>pH = pK<sub>a<\/sub><\/li>\n<li>pH = pK<sub>b<\/sub><\/li>\n<li>pH &gt; pK<sub>a<\/sub><\/li>\n<li>pH &gt; pK<sub>b<\/sub><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>pH &gt; pK<sub>a<\/sub><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#10<\/span>. In a saturated solution of AgCl, the molar concentration of Ag<sup>+<\/sup> and Cl<sup>&#8211;<\/sup> is 1.0 x 10<sup>-5<\/sup> M each. What is the value of Ksp?<\/strong><\/p>\n<ul>\n<li>1.0 x 10<sup>-5<\/sup><\/li>\n<li>0.1 x 10<sup>-5<\/sup><\/li>\n<li>1.0 x 10<sup>-15<\/sup><\/li>\n<li>1.0 x 10-<sup>10<\/sup><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>1.0 x 10-<sup>10<\/sup> <\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#11<\/span>. The solubility of Fe(OH)<sub>3<\/sub> is x molar per dm<sup>3<\/sup>. Its K<sub>sp<\/sub> would be:<\/strong><\/p>\n<ul>\n<li>9x<sup>3<\/sup><\/li>\n<li>27x<sup>4<\/sup><strong><br \/>\n<\/strong><\/li>\n<li>3x<sup>4<\/sup><\/li>\n<li>9x<sup>4<\/sup><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>27x<sup>4<\/sup><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#12<\/span>. For the reaction H<sub>2(g)<\/sub> + I<sub>2(g)<\/sub> \u21cc 2HI<sub>(g)<\/sub>. The equilibrium constant changes with:<\/strong><\/p>\n<ul>\n<li>Total pressure<\/li>\n<li>The concentration of H<sub>2<\/sub> and I<sub>2<\/sub><\/li>\n<li>Catalyst<\/li>\n<li>Temperature<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Temperature<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#13<\/span>. The decomposition of N<sub>2<\/sub>O<sub>4<\/sub> to NO<sub>2<\/sub> is carried out at 280\u00b0C in chloroform. When equilibrium is reached, 0.2 moles of N<sub>2<\/sub>O<sub>4<\/sub> and 0.02 mole of NO<sub>2<\/sub> are present in 1:1 ratio. The equilibrium constant for the reaction N<sub>2<\/sub>O<sub>4<\/sub> \u21922NO<sub>2<\/sub> is______.<\/strong><\/p>\n<ul>\n<li>0.01<\/li>\n<li>0.001<\/li>\n<li>0.02<\/li>\n<li>0.002<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>0.002<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#14<\/span>. In a given system, water and ice are in equilibrium, if the pressure is applied to the above system then:<\/strong><\/p>\n<ul>\n<li>More ice is formed<\/li>\n<li>The amount of ice and water will remain the same<\/li>\n<li>More ice is melted<\/li>\n<li>Both a and b<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>More ice is melted<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#15<\/span>. The solubility product of AgCl is 2.0 x 10<sup>-10<\/sup> mol<sup>2<\/sup>dm<sup>-6<\/sup>. The maximum concentration of Ag<sup>+ <\/sup>ions in the solution is:<\/strong><\/p>\n<ul>\n<li>1.41 x 10<sup>-5<\/sup> mol<sup>2<\/sup> dm<sup>-6<\/sup><\/li>\n<li>\u00a01.41 x 10<sup>-10<\/sup> mol<sup>2<\/sup> dm<sup>-6<\/sup><\/li>\n<li>2.0 x 10<sup>-10<\/sup> mol<sup>2<\/sup> dm<sup>-6<\/sup><\/li>\n<li>4.0 x 10<sup>-20<\/sup> mol<sup>2<\/sup> dm<sup>-6<\/sup><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>1.41 x 10<sup>-5<\/sup> mol<sup>2<\/sup> dm<sup>-6<\/sup><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#16<\/span>. An excess of silver nitrate is added to the aqueous barium chloride and the precipitate is removed by filtration. What are the main ions in the filtrate?<\/strong><\/p>\n<ul>\n<li>Ag<sup>+<\/sup> and NO<sup>&#8211;<\/sup><sub>3<\/sub> only<\/li>\n<li>NO<sup>&#8211;<\/sup><sub>3<\/sub> and Ba<sup>+2<\/sup> only<\/li>\n<li>Ag<sup>+<\/sup> and NO<sup>&#8211;<\/sup><sub>3<\/sub> and Ba<sup>+2<\/sup> only<\/li>\n<li>Cl<sup>&#8211;<\/sup> and NO<sup>&#8211;<\/sup><sub>3<\/sub> and Ba<sup>+2<\/sup> only<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Ag<sup>+<\/sup> and NO<sup>&#8211;<\/sup><sub>3<\/sub> and Ba<sup>+2<\/sup> only<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#17<\/span>. The pH of 10<sup>-4<\/sup> mole dm<sup>-3<\/sup>of HCl:<\/strong><\/p>\n<ul>\n<li>2<\/li>\n<li>4<strong><br \/>\n<\/strong><\/li>\n<li>3<\/li>\n<li>5<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>4<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#18<\/span>. The most suitable temperature for preparing ammonia gas is:<\/strong><\/p>\n<ul>\n<li>250\u00b0C<\/li>\n<li>450\u00b0C<\/li>\n<li>350\u00b0C<\/li>\n<li>550\u00b0C<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>450\u00b0C<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#19<\/span>. The K<sub>w<\/sub> of water at 25\u00b0C is given by:<\/strong><\/p>\n<ul>\n<li>10<sup>-7<\/sup><\/li>\n<li>10<sup>-10<\/sup><\/li>\n<li>10<sup>-12<\/sup><\/li>\n<li>10<sup>-14<\/sup><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>10<sup>-14<\/sup><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#20<\/span>. When HCl gas is passed through the saturated solution of rock salt, the solubility of NaCl:<\/strong><\/p>\n<ul>\n<li>Increases<\/li>\n<li>May increases or decreases<\/li>\n<li>Decreases<\/li>\n<li>None of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Decreases<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#21<\/span>. For what value of K<sub>c<\/sub> almost forward reaction is complete?<\/strong><\/p>\n<ul>\n<li>K<sub>c<\/sub> = 10<sup>-30<\/sup><\/li>\n<li>K<sub>c<\/sub> = 1<\/li>\n<li>K<sub>c<\/sub> = 10<sup>30<\/sup><\/li>\n<li>K<sub>c<\/sub> = 0<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>K<sub>c<\/sub> = 10<sup>30<\/sup><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#22<\/span>. In which of the following Equilibria will K<sub>c<\/sub> and K<sub>p<\/sub> have not the same value?<\/strong><\/p>\n<ul>\n<li>2HI \u21cc H<sub>2<\/sub> + I<sub>2<\/sub><\/li>\n<li>2SO<sub>2<\/sub> + O<sub>2<\/sub> \u21cc 2SO<sub>3<\/sub><\/li>\n<li>N<sub>2<\/sub> + O<sub>2<\/sub> \u21cc 2NO<\/li>\n<li>All of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>2SO<sub>2<\/sub> + O<sub>2<\/sub> <\/strong><strong>\u21cc<\/strong><strong> 2SO<sub>3<\/sub><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#23<\/span>. If the temperature is increased of the following reaction, then will go in<\/strong><br \/>\n<strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 N<sub>2<\/sub> + 3H<sub>2<\/sub> \u21cc 2NH<sub>3<\/sub> \u2206H = -Ve<\/strong><\/p>\n<ul>\n<li>Forward direction<\/li>\n<li>Remain constant<\/li>\n<li>Reverse direction<\/li>\n<li>Cannot be predicted<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Reverse direction<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#24<\/span>. The pH of an aqueous solution is 3.0 at 25\u00b0C. The hydrogen ion concentration in the solution would be:<\/strong><\/p>\n<ul>\n<li>0.001<strong><br \/>\n<\/strong><\/li>\n<li>0.01<\/li>\n<li>0.0001<\/li>\n<li>10<sup>-5<\/sup><\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>0.001<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#25<\/span>. Which one is very weak acid?<\/strong><\/p>\n<ul>\n<li>HF<\/li>\n<li>H<sub>2<\/sub>CO<sub>3<\/sub><\/li>\n<li>HCl<\/li>\n<li>H<sub>2<\/sub>O<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>H<sub>2<\/sub>O<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#26<\/span>. Which one increases by common ion effect except?<\/strong><\/p>\n<ul>\n<li>Crystallization<\/li>\n<li>Solubility<strong><br \/>\n<\/strong><\/li>\n<li>Association of ions<\/li>\n<li>All of these<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Solubility<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#27<\/span>. A basic buffer solution can be prepared by mixing:<\/strong><\/p>\n<ul>\n<li>Strong acid and it is a salt with a weak base<\/li>\n<li>Strong base and it is a salt with weak acid<\/li>\n<li>Weak base and it is a salt with a strong acid<\/li>\n<li>Weak acid and it is a salt with strong base<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Weak base and its salt with strong acid<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#28<\/span>. Which one is the best buffer those have:<\/strong><\/p>\n<ul>\n<li>pH = pK<sub>a<\/sub><\/li>\n<li>pH &gt; pK<sub>a<\/sub><\/li>\n<li>pOH &lt; pK<sub>b<\/sub><\/li>\n<li>pK<sub>a<\/sub> = 0<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>pH = pK<sub>a<\/sub><\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#29<\/span>. The pH of an ideal buffer is:<\/strong><\/p>\n<ul>\n<li>10<\/li>\n<li>7<\/li>\n<li>Less than 7<\/li>\n<li>0<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>7<\/strong>\n\t\t\t<\/div><\/div>\n<p><strong><span style=\"color: #ff6600;\">Question#30<\/span>. If the ionic product is equal to K<sub>sp<\/sub> then the solution is:<\/strong><\/p>\n<ul>\n<li>Unsaturated<\/li>\n<li>Ideal<\/li>\n<li>Supersaturated<\/li>\n<li>Saturated<\/li>\n<\/ul>\n<div class=\"clear\"><\/div><div class=\"toggle close\"><h3 class=\"toggle-head-open\">Answer<i class=\"fa fa-angle-up\"><\/i><\/h3><h3 class=\"toggle-head-close\">Answer<i class=\"fa fa-angle-down\"><\/i><\/h3><div class=\"toggle-content\">\n\t\t\t<strong>Saturated<\/strong>\n\t\t\t<\/div><\/div>\n\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>If you are searching for Entry Test MCQs then the 1st Year Chemistry Chemical Equilibrium MCQs are available here. This chapter is about Chemical Equilibrium. There are two types of Chemical Reactions i.e. Reversible and Irreversible reactions. Reversible Reactions are in the format of Chemical Equilibrium. For the chemical reactions, the law of Mass Action &hellip;<\/p>\n","protected":false},"author":2,"featured_media":373,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/posts\/162"}],"collection":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/comments?post=162"}],"version-history":[{"count":0,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/posts\/162\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/media\/373"}],"wp:attachment":[{"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/media?parent=162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/categories?post=162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/talib.pk\/test-preparation\/wp-json\/wp\/v2\/tags?post=162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}