Chemical EquilibriummediumMCQ SINGLE

At total pressure P₁ atm and P₂ atm, N₂O₄ is dissociated to an extent of 33.33% and 50.00%, respectiChemical Equilibrium Chemistry Question

Question

At total pressure P₁ atm and P₂ atm, N₂O₄ is dissociated to an extent of 33.33% and 50.00%, respectively. The ratio of pressures P₁ and P₂ is

Answer: C

💡 Solution & Explanation

K_p = 4α²P / (1-α²) remains constant. For α₁ = 1/3: K_p = 4(1/9)P₁ / (8/9) = P₁/2. For α₂ = 1/2: K_p = 4(1/4)P₂ / (3/4) = 4P₂/3. Equating them: P₁/2 = 4P₂/3. Therefore, the ratio P₁/P₂ = 8/3. Therefore, correct answer is C.

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