Rate constant of two reactions are given below. Identifying their order of reaction. (i) k = 5.3 × 10-2 L mol-1 s-1 (ii) k = 3.8 × 10-4 s-1

Question

Rate constant of two reactions are given below. Identifying their order of reaction. (i) k = 5.3 × 10-2 L mol-1 s-1 (ii) k = 3.8 × 10-4 s-1 (A) (i) second order, (ii) first order (B) (i) first order, (ii) second order (C) (i) zero order, (ii) first order (D) (i) second order, (ii) zero order

Tardigrade Admin · Accepted Answer

For second order, rate constant =(mol L-1/s)×(1/(mol L-1)2)=mol-1 L s-1 For first order, rate constant =(mol L-1/s)×(1/mol L-1)=s-1

Q. Rate constant of two reactions are given below. Identifying their order of reaction.
(i) $k = 5.3 \times 1 0^{- 2} L m o l^{- 1} s^{- 1}$
(ii) $k = 3.8 \times 1 0^{- 4} s^{- 1}$

(i) second order, (ii) first order

(i) first order, (ii) second order

(i) zero order, (ii) first order

(i) second order, (ii) zero order

For second order, rate constant
$= \frac{m o l L ^{- 1}}{s} \times \frac{1}{( m o l L ^{- 1} ) ^{2}} = m o l^{- 1} L s^{- 1}$
For first order, rate constant $= \frac{m o l L ^{- 1}}{s} \times \frac{1}{m o l L ^{- 1}} = s^{- 1}$

Q. Rate constant of two reactions are given below. Identifying their order of reaction. (i) k=5.3×10−2Lmol−1s−1 (ii) k=3.8×10−4s−1