Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Given Δ r Hº = –54.08kJ mol –1 and Δ r Sº = 10.0 J mol –1 at 25ºC, the value of log 10 K for the reaction A 
B is
Text Solution
Verified by ExpertsThe correct answer is:
B
Δ Gº = Δ Hº – T Δ Sº
= –54.08 × 10 3 – 298 × 10 = –54080 – 2980
= –57060 J = –57.06 KJ
Δ Gº = –RT λ nk
–57.06 × 10 3 = –8.314 × 2.303 log 10 K × 298 ⇒ log 10 K = 
= 10
Correct option is 10.
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