consider the reaction x → y + z. which of the following is a possible rate law? a rate = k y b rate = k y z…

consider the reaction x → y + z. which of the following is a possible rate law? a rate = k y b rate = k y z c rate = k x z d rate = k x question 3

consider the reaction x → y + z. which of the following is a possible rate law? a rate = k y b rate = k y z c rate = k x z d rate = k x question 3

Answer

Explanation:

Step1: Recall rate - law concept

The rate - law of a reaction is expressed in terms of the concentration of the reactants. For a reaction (X\rightarrow Y + Z), the rate of the reaction depends on the concentration of the reactant (X). The rate constant (k) is a proportionality constant.

Step2: Analyze each option

  • Option A: rate (=k[Y]) is incorrect because the rate of the forward reaction (X\rightarrow Y + Z) should not depend on the concentration of the product (Y) in a simple one - step reaction.
  • Option B: rate (=k[Y][Z]) is incorrect as it depends on the concentrations of the products (Y) and (Z), not the reactant.
  • Option C: rate (=k[X][Z]) is incorrect since (Z) is a product and the rate of the forward reaction is not based on the concentration of a product in a simple reaction.
  • Option D: rate (=k[X]) is correct as the rate of a simple one - step reaction (X\rightarrow Y + Z) is proportional to the concentration of the reactant (X).

Answer:

D. rate (=k[X])