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- 1. Multiple ChoiceWhat is the parameter to measure the rate or speed of a reaction beside time?Change in volumeChange in consentrationChange in pressureChange in temperature
- 2. Multiple ChoiceWhich of the following is expressions represents correctly rate of following reaction?
X + Y → Z + Q ΔH = +22kj/molRate = +Δ[X] / ΔtRate = +Δ[Y] / ΔtRate = +Δ[Z] / ΔtRate = -Δ[Q] / Δt - 3. Multiple ChoiceWhat is the theory which explains how chemical reaction occurs?DiffusionBig BangCollusionEvalusion
- 4. Multiple ChoiceWhat is the energy needed for reactant particles to change into products?PotentialKineticActivationConversion
- 5. Multiple ChoiceA+B →C+D ΔH = -202kj/mol
How can above reaction be classified in terms of energy exchange during chemical change?Combination reactionEndothermic reactionTransthermal reactionExothermic reaction - 6. Multiple ChoiceLimestone chunks are reaction with hydrochloric acid solution at constant temperature with average speed. If we crash the chunks of limestone into powder how would speed of reaction change?Reaction speeds upReaction does not changeReaction slows downReaction stops
- 7. Multiple ChoiceTo measure rate of reaction, either decreasing mass of solid reactant or increasing volume of gaseous products are used.
Which of the following reactions uses increasing volume of gaseous product method to measure the its rate?Reaction between iron metal and airReaction between sodium hydroxide and nitric acidReaction between table salt and waterReaction between hydrochloric acid and aluminum metal - 8. Multiple ChoiceWhat is the rate equation of following chemical reaction?
2NaOH + H2SO4 → Na2SO4 + 2H2ORate = k.[NaOH]2.[H2SO4]Rate = k.[NaOH].[H2SO4]Rate = k.[NaOH]2Rate = k.[NaOH]2.[H2SO4]2 - 9. Multiple ChoiceWhat is the degree of the following chemical reaction?
4Al + 3O2 → 2Al2O34567 - 10. Multiple ChoiceWhich of the followings is not the dynamic chemical equilibrium?H2(g) + l2(g) ↔ 2HI(g)H2O(s) ↔ H2O(l)N2O4(g) ↔ 2NO2(g)N2(g) + 3H2(g) ↔ 2NH3(g)
- 11. Multiple ChoiceWhat is explaining behaviors of a system at equilibrium?Avagadro's LawBoyles LawLe Chatelier PrincipleCollusion Theory
- 12. Multiple ChoiceWhen following system is disturbed by addition of Nitrogen gas to the system container how does the system act?
H2(g) + l2(g) ↔ 2HI(g)System shifts product sideSystem shifts reactant sideSystem does nothing - 13. Multiple ChoiceWhen following system is disturbed by addition of Hydrogen gas to the system container how does the system act?
H2(g) + l2(g) ↔ 2HI(g)System shifts products sideSystem shifts product sideSystem does nothing - 14. Multiple ChoiceWhen following system is disturbed by removing of Hydrogen iodide gas to the system container how does the system act?
H2(g) + l2(g) ↔ 2HI(g)System shifts product sideSystem shifts reactant sideSystem does nothing - 15. Multiple ChoiceWhen following system is disturbed by heating the system container how does the system act?
H2(g) + l2(g) ↔ 2HI(g) ΔH= -9.6kj/molSystem shifts product sideSystem shifts reactant sideSystem does nothing - 16. Multiple ChoiceWhen following system is disturbed by cooling the system container how does concentration of SO3 change?
2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/molIncreaseDeacreasNo change - 17. Multiple ChoiceWhen following system is disturbed by addition of Oxygen gas to the system container how does concentration of SO2 change?
2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/molIncreaseDeacreaseNo change - 18. Multiple ChoiceWhen following system is disturbed by addition of catalyst to the system container how does concentration of O2 change?
2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/molIncreaseDeacreaseNo change - 19. Multiple ChoiceWhen following system is disturbed by addition of inert gas to the system container how does concentration of SO3 change?
2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/molIncreaseDeacreaseNo change - 20. Multiple ChoiceWhen following system is disturbed by increasing volume of system container how does concentration of SO2 change?
2SO2(g) + O2(g) ↔ 2SO3(g) ΔH= +9kj/molIncreaseDeacreaseNo change - Answer choicesTagsAnswer choicesTags