Question

The rate equation for the reaction 2A + B $\longrightarrow$ C is found to be: rate = k[A] [B]. The correct statement in relation to this reaction is that the :

• A. Unit of k must be sec–1
• B. $t_{\text{1/2 }}$is a constant
• C. Rate of formation of C is twice the rate of disappearance of A
• D. Value of k is independent of initial concentrations of A and B.

Answer 1

Answer: (D)

Value of k is independent of initial concentrations of A and B.

Answer 2

2 A + B $\longrightarrow$ C

rate = k [A] [B]

The value of k (velocity constant) is always independent of the concentration of reactant and it is a function of temperature only.