Question

In a particular experiment, the equilibrium constant measured for the reaction, Cl2(g)+NO(g)Cl2NO2(g),is 2.8 (a) Based on...

In a particular experiment, the equilibrium constant measured for the reaction,

Cl2(g)+NO(g)\rightleftharpoonsCl2NO2(g),is 2.8

(a) Based on this measurement, calculate delta G0 for this reaction.

(b) Calculate delta Go using data from Appendix E at the back of the book and discuss the agreement between your two calculations.

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Answer #1

?G° = -RTlnK

Where R = gas constant = 8.314

T = temperature = room temperature = 27°C = 298K

K = equilibrium constant

So, ?G° = - 8.314 × 298 × ln2.8

= -2550.95 J/mol

Negative sign of free energy change shows spontaneity of the reaction. Hence, reaction is spontaneous.

Calculate ?G° from the data given in your table accordingly and compare both the values.

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