Question

Analyze the given reaction below:

${\text{H}}_2\text{(g)}+{\text{I}}_2\text{(g)}\leftrightharpoons \text{2HI (g)}$

The given reaction is in chemical equilibrium. Which of the following factor will not have any effect on the given reaction?

• A. Increase in the concentration of the reactants
• B. Increase in the concentration of the products
• C. Increase in the pressure of the gases
• D. Increase in the temperature of the reaction

Answer 1

The correct option is C Increase in the pressure of the gases

Chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time. The factors which have an influence on chemical equilibrium are:

(i) Concentration

(ii) Pressure

(iii) Temperature

The change in any of these factors causes a shift in chemical equilibrium.

For the given reaction the change in pressure will not have any effect because there is no change in the number of reactants and product molecules.