Q58 / 180 · NEET 2018 · Chemistry

Which one of the following conditions will favor the maximum formation of the product in the reaction?

$A_{2} (g) + B_{2} (g) ⇌ X_{2} (g) Δ_{r} H = - X kJ$

Solution

\log \frac{k_{2}}{k_{1}} = \frac{Δ H}{2 .303 K} (\frac{1}{T_{1}} - \frac{1}{T_{2}})

∴ Δ H = - ve

and for the maximum formation of the product

k_{2} > k_{1}

hence,

T_{1} > T_{2}

mean temperature should decrease

Δ n_{g} = - ve

k_{p} \propto \frac{1}{p}

on increasing

p

reaction goes in forward direction.

Hence, the correct answer is option: 'C'.