Question 26 of 69intermediate🔧 ApplyShort Answer3 marks

Which of the following reactions will get affected by increasing the pressure? Also, mention whether change will cause the reaction to go into forward or backward direction. (i) COCl2(g)⇌CO(g)+Cl2(g)COCl_2 (g) \rightleftharpoons CO (g) + Cl_2 (g) (ii) CH4(g)+2S2(g)⇌CS2(g)+2H2S(g)CH_4 (g) + 2S_2 (g) \rightleftharpoons CS_2 (g) + 2H_2S (g) (iii) CO2(g)+C(s)⇌2CO(g)CO_2 (g) + C (s) \rightleftharpoons 2CO (g) (iv) 2H2(g)+CO(g)⇌CH3OH(g)2H_2 (g) + CO (g) \rightleftharpoons CH_3OH (g) (v) CaCO3(s)⇌CaO(s)+CO2(g)CaCO_3 (s) \rightleftharpoons CaO (s) + CO_2 (g) (vi) 4NH3(g)+5O2(g)⇌4NO(g)+6H2O(g)4NH_3 (g) + 5O_2 (g) \rightleftharpoons 4NO (g) + 6H_2O (g)

(i)
Answer

Affected, backward direction

(ii)
Answer

Not affected

(iii)
Answer

Affected, backward direction

(iv)
Answer

Affected, forward direction

(v)
Answer

Affected, backward direction

(vi)
Answer

Affected, backward direction

Explanation

According to Le Chatelier's principle, a change in pressure affects only those equilibria where the number of moles of gaseous substances on the reactant and product sides are different. Increasing the pressure shifts the equilibrium in the direction of fewer moles of gas.

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