Ncert Exercises & Solutions

Match the items in Column I and Column II:

Column I	Column II
A. Mathematical expression for the rate of reaction	1. Rate constant
B. Rate of reaction for zero-order reaction is equal to	2. Rate law
C. Units of rate constant for zero-order reaction is same as that of	3. Order of slowest step
D. Order of a complex reaction is determined by	4. Rate of reaction

Codes

HINT: For zero-order reaction unit of rate constant is

mol

L^{- 1} s^{- 1}

Explanation:

1. Mathematical expression for the rate of reaction is known as rate law.

2. Rate of reaction for the zero-order reaction is equal to rate constant.

$\begin{array}{l} r = k [A]^{0} \\ ∴ r = k \end{array}$

3. Unit of the rate of reaction is the same as that of the rate of reaction

4. Order of complex reactions is determined by the rate of a reaction, which is the slowest.