Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Calculate standard entropy change in the reaction
Fe 2 O 3 (s) + 3H 2 (g) ⎯→ 2Fe (s) + 3H 2 O ( λ )
Given : Sº m (Fe 2 O 3 , S) = 87.4 , Sº m (Fe, S) = 27.3, Sº m (H 2 , g) = 130.7, Sº m (H 2 O, λ ) = 69.9 JK –1 mol –1
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(– 215.2 JK –1 mol –1)
Δ r Sº = Σ v p Sº(Products)– Σ v R Sº(Reactants)
= (2×27.3+ 3 × 69.9) – (87.4 + 3 × 130.7) = – 215.2 JK –1 mol –1
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