Given the equilibrium system NH_4Cl(s) NH_4^+(aq)+Cl^-(aq), ( H=+3.5 kcal/mol). What change will shift the equilibrium to the right? [VITEEE 2007]

JEE Main Chemistry question

Given the equilibrium system NH_4Cl(s)\rightleftharpoons NH_4^+(aq)+Cl^-(aq), ( kcal/mol). What change will shift the equilibrium to the right? [VITEEE 2007]

(A)Decreasing the temperature
(B)Increasing the temperatureCorrect
(C)Dissolving NaCl crystals in the equilibrium mixture
(D)Dissolving crystals in the equilibrium mixture

Answer: (B)

Solution

Dissolution is endothermic (); increasing temperature favours the endothermic forward (dissolution)

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Question ID VK-135499