When the reversible reaction, N₂+ O₂ 2 NO
Has reached a state of dynamic equilibrium , which statement(s) below is(are) true?
I. Both the forward and reverse reactions shut down and no more NO, N₂or O₂are produced.
II. The rate of the forward reaction equals the rate of the reverse reaction.
III. The rate constant of the forward reaction equals the rate constant of the reverse reaction.

Question

When the reversible reaction, N₂+ O₂  2 NO
Has reached a state of dynamic equilibrium , which statement(s) below is(are) true?
I. Both the forward and reverse reactions shut down and no more NO, N₂or O₂are produced.
II. The rate of the forward reaction equals the rate of the reverse reaction.
III. The rate constant of the forward reaction equals the rate constant of the reverse reaction.

Quizplus · Accepted Answer

At dynamic equilibrium, the rate of the forward reaction equals the rate of the reverse reaction, which is statement II. Statement I is not true because although the production of NO, N₂, and O₂ may have stopped, the reactions have not shut down entirely. Statement III is not necessarily true because the rate constant of the forward reaction does not have to equal the rate constant of the reverse reaction for dynamic equilibrium to occur. Therefore, the best choice is B.

When the Reversible Reaction, N₂+ O₂ 2 NO