In a system in which the enthalpy changed - 447.1 kJ/mol and the entropy decreases by 75.1 kJ/mol•K, calculate the temperature at which the system will be at equilibrium.

Question

Chemistry

Karsyn Boyle

9 April, 21:25

In a system in which the enthalpy changed - 447.1 kJ/mol and the entropy decreases by 75.1 kJ/mol•K, calculate the temperature at which the system will be at equilibrium.

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Answers (1)

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Ryan Contreras · Answer 1

5.95 K

Explanation:

The relationship between enthalpy (H), entropy (S)) and temperature (T) is given by;

ΔG = ΔH - TΔS

At equilibrium, ΔG = 0

ΔH = - 447.1 kJ/mol

ΔS = - 75.1 kJ/mol•K (Negative because it decreased)

Substituting back ito the formulae, we have;

0 = - 447.1 - T ( - 75.1)

447.1 = 75.1 (T)

T = 447.1 / 75.1 = 5.95 K