Chapter 14.6, Problem 14.12.1PE

Practice Exercise 1
Consider the following two-step reaction mechanism:

A(g) + B(g) → X(g) + Y(g)
X(g) + C(g) → Y(g) + Z(g)
Which of the following statements about this mechanism is or are true?

1. Both of the steps in this mechanism are bimolecular.
2. The overall reaction is A(g) + B(g) C(g) → Y(g) + Z(g).
3. The substance X(g) is an intermediate in this mechanism.

1. Only one of the statements is true.
2. Statements (i) and (ii) are true.
3. Statements (i) and (iii) are true.
4. Statements (ii) and (iii) are true.
5. All three statements are true.