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For the chemical reaction

$\large {A_{2\left( g \right)}} + \,{B_{2\left( g \right)}}\, \rightleftharpoons \,2A{B_{\left( g \right)}}$ the amount of AB at equilibrium is affected by

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Pressure only

Temperature, pressure and catalyst

Temperature and pressure

Temperature only

answer is B.

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Detailed Solution

Generally amount of AB is affected by

A) temperature B) Pressure C) Concentration

$\large {A_2}\left( g \right) + {B_2}\left( g \right) \rightleftharpoons 2AB\left( g \right)$

Δn = 0, for the reaction $\large \therefore$ pressure (or) volume has no effect on equilibrium state.

A catalyst has no effect on equilibrium state assuming that the given reaction is extothermic (or) endothermic the amount of AB i.e. forward reaction is affected by temperature.

Thus option (2) is correct

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