Chemistry Past Questions and Answers

Which of the following lowers the activation energy of a chemical reaction?

Consider the reaction represented by the following equation: H<sub style='font-size: smaller;'>2(g)</sub> + 1<sub style='font-size: smaller;'>2(g)</sub> → 2HI<sub style='font-size: smaller;'>(g)</sub>. The number of effective collisions of molecules of the reactants decreases as

What will be the effect of increase in pressure on the following system at equilibrium? 2NH<sub style='font-size: smaller;'>2(g)</sub> N<sub style='font-size: smaller;'>2(g)</sub> + 3H<sub style='font-size: smaller;'>2(g)</sub>

Which of the following is not correct about oxidation number convention? The oxidation number of a/an

Equal volumes of water were added to one mole of each of the following compounds. Which of them produced the largest number of ions