ABC26PH0864 · Thermodynamics and Thermochemistry

Subject: Physical Chemistry · Chapter: Thermodynamics and Thermochemistry · Topic: Thermodynamics & Thermochemistry – General · Exam: JAM 2001-2022 · Marks: 2 · Difficulty: Medium

The standard Gibbs free energy change for the reaction
\[ \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \rightarrow \mathrm{H}_{2}(\mathrm{g})+\frac{1}{2} \mathrm{O}_{2}(\mathrm{g}) \]
at 2500 K is $+118 \mathrm{kJ} \mathrm{mol}^{-1}$. The equilibrium constant for the reaction is [Given: $\mathrm{R}=8.314 \mathrm{J} \mathrm{K}^{-1} \mathrm{mol}^{-1}$ ]
(a)0.994
(b)1.006
(c)$3.42 \times 10^{-3}$
(d)292.12
Answer
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Explanation
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