If K₁ and K₂ are the equilibrium constants for a reversible reaction at T₁ K and T₂ K temperature, r — Chemical Equilibrium Chemistry Question
Question
If K₁ and K₂ are the equilibrium constants for a reversible reaction at T₁ K and T₂ K temperature, respectively (T₁ < T₂) and the reaction takes place with neither heat evolution nor absorption, then
Answer: D
💡 Solution & Explanation
Since there is neither heat evolution nor absorption, ΔH = 0. According to the van 't Hoff equation, ln(K₂/K₁) = (ΔH/R)(1/T₁ - 1/T₂), if ΔH = 0, ln(K₂/K₁) = 0, meaning K₁ = K₂ at all temperatures. Therefore, correct answer is D.
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