Calculate the equilibrium constant Kc for a reaction occurring at a temperature of 15 oC, and with a ΔGo of  -45.3 kJ/mol. (Use R=8.314 J/mol⋅K and 273.00 for oC/K conversion)

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Calculate the equilibrium constant Kc for a reaction occurring at

a temperature of 15 oC, and with a ΔGo of  -45.3 kJ/mol.

(Use R=8.314 J/mol⋅K and 273.00 for oC/K conversion)

Expert Solution
Step 1

(a)

Given:

Temperature = 15 C

delta G = -45.3 kJ/mol

Step 2

The value of given temperature in Kelvin is,

T(K) = T( C) + 273

T(K) = 15 + 273

T(K) = 288 K.

Step 3

The relationship between Gibbs free energy change and equilibrium constant is,

Chemistry homework question answer, step 3, image 1

Here, R is the universal gas constant (8.314 J/K mole and Keq is the equilibrium constant and T is the temperature in kelvin.

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