The equilibrium 2S O_ 2(g) + O_ 2(g) 2S O_ 3(g) shifts forward, i… - Vidyadip

MCQ

The equilibrium $2S{O_{2(g)}} + {O_{2(g)}}$ $\rightleftharpoons$ $2S{O_{3(g)}}$ shifts forward, if

A
A catalyst is used
B
An adsorbent is used to remove $S{O_3}$ as soon as it is formed
C
Low pressure
D
Small amounts of reactants are used

✓

Answer

When a catalyst is used, the equilibrium will be achieved quickly but there will be no effect on the equilibrium concentrations. Hence, there will be no shift in the equilibrium.

When an adsorbent removes $SO _3$ as soon as it is formed, the equilibrium will shift in the forward direction so that more and more $SO _3$ is formed which will nullify the effect of decrease in the concentration of product.

When small amounts of reactants are removed, the equilibrium will shift in the backward direction so as to nullify the effect of decrease in the reactant concentration.

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