(1) Chemical Equilibrium Characteristics Consider the reaction: Which of the fol
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Question
(1) Chemical Equilibrium Characteristics
Consider the reaction:
Which of the following statements are true and which are false.
a) 1 mol of H2O(g) and 1 mol of CO(g) are placed in a vessel and 1 mol of H2(g) and 1 mol of CO2(g) are placed in another of equal volume. At equilibrium, at 350°C, the amounts of CO(g) in the two vessels are equivalent.
b) At equilibrium the rate of the forward reaction is less than the rate of the reverse reaction.
c) At equilibrium, individual molecules may be subject to rapid chemical transformations.
d) At equilibrium, the overall composition of the reaction mixture is changing rapidly.
e) The equilibrium constant is independent of the initial concentrations.
f) Amounts of all reactants and products corresponding to an exact equilibrium composition for this reaction are sealed in a vessel. The CO placed in the vessel is labelled with 14C. After an indefinite period of time 14C may be found in both CO and CO2 molecules.
Explanation / Answer
a) True
1 mol of H2O(g) and 1 mol of CO(g) are placed in a vessel and 1 mol of H2(g) and 1 mol of CO2(g) are placed in another of equal volume. At equilibrium, at 350°C, the amounts of CO(g) in the two vessels are equivalent.
b) False
At equilibrium the rate of the forward reaction is equal to the rate of the reverse reaction.
c) True
At equilibrium, individual molecules may be subject to rapid chemical transformations as the equilibrium is dynamic in nature.
d) False
At equilibrium, the overall composition of the reaction mixture is constant.
e) True
The equilibrium constant is independent of the initial concentrations. The equilibrium constant depends on temperature.
f) True
Amounts of all reactants and products corresponding to an exact equilibrium composition for this reaction are sealed in a vessel. The CO placed in the vessel is labelled with 14C. After an indefinite period of time 14C may be found in both CO and CO2 molecules. There is rapid exchange of 14C between CO and CO2.
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