Published by:
CGP EDU Academic Team
Published on: August 14, 2026
For the water gas reaction
C (s) + H 2 O (g) 
CO (g) + H 2 (g)
At 1000 K the standard Gibbs free energy change of the reaction is – 8.314 kJ/mol. Therefore at 1000 K the equilibrium constant of the above water gas reaction is-
A
1
B
10
C
D
2.718
Text Solution
Verified by ExpertsThe correct answer is:
D
Δ r G 0 = – 8.314 × 10 3
∴ – Δ r G 0 = 8.314 × 10 3 = RT ln K eq
or 8.314 × 10 3 = 8.314 × 10 3 ln K eq
or ln K eq = 1 = ln e
or K eq = e = 2.718
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