Question

For the reaction, Cl2(g)+2NO(g) 2NOCl(g), the initial concentrations, [Cl₂]₀ and [NO]₀ are

given below along the corresponding with initial rates.

[Cl₂]₀/M [NO]₀/M Initial rate/Ms^-1

0.10 0.10 3.0*10^-3

0.20 0.10 6.0*10^-3

0.20 0.20 2.4*10^-2

Determine (i) the order of the reaction with respect to NO and Cl₂; (ii) the rate law; and (iii) the

rate constant.

Answer 1

i) The order with respect to NO is 2

The order with respect to Cl2 is 1

ii) The rate law for the reaction Rate $=k[NO] _2 [Cl _2 ​ ]$

iii) The rate constant.

$=177.77mol ^{ −2} L ^2 min ^{−1}$