The standard entropy change for the reaction
$4 Fe (s) + 3 O_{2} (g) \to 2 {Fe}_{2} O_{3} (s)$ is $- 550 J K^{- 1}$ at $298 K$
[Given : The standard enthalpy change for the reaction is $- 165 kJ {mol}^{- 1}$ ]. The temperature in $K$ at which the reaction attains equilibrium is (Nearest Integer)

Question

The standard entropy change for the reaction

$4 Fe (s) + 3 O_{2} (g) \to 2 {Fe}_{2} O_{3} (s)$ is $- 550 J K^{- 1}$ at $298 K$

[Given : The standard enthalpy change for the reaction is $- 165 kJ {mol}^{- 1}$ ]. The temperature in $K$ at which the reaction attains equilibrium is (Nearest Integer)

TestHub · Accepted Answer

4 Fe s + 3 O 2 g → 3 Fe 2 O 3 s ΔS r = - 550 J / K ΔS r = - 165 kJ / mole At equilibrium ΔG = 0 T = ΔH ΔS at equilibrium = - 165 × 10 3 - 550 = 300 K

Chemistry - Thermodynamics - II Question with Solution | TestHub

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