Example 1
Determine the change in the standard entropy, ΔS⁰, for the synthesis of carbon dioxide from graphite and oxygen:
C(s) + O2(g) → CO2(g)
Solution
ΔS⁰ = ∑nS⁰(products) – ∑mS⁰(reactants)
ΔS⁰ = (213.8 J/mol K) – (205.2 J/mol K + 5.7 J/mol K)
ΔS⁰ = +2.9 J/mol K
