Map ods General Chemistr Donald McQuarrie.Peter A. Rock Ethan Galloghy Universit

Question

Map ods General Chemistr Donald McQuarrie.Peter A. Rock Ethan Galloghy University Science Books presented by Sapling Learning Calculate the standard entropy. AS'm, of the following reaction at 250°C using the data in this table. The standard enthalpy of the reaction, rnn,s-633.1 kJ, mol-1. 3C,H 2(g) C6H6(r) Number 5,1,-1-42952 Then, calculate the standard Gibbs free energy of the reaction, AG rn Incorrect. To calculate Gron, use the following equation where Tis the temperature in kelvins. Number Finally, determine which direction the reaction is spontaneous as written at 25.0 °C and standard pressure. forward reverse O both O neither

Explanation / Answer

H°rxn = -633.1 KJ. mol-1 = -633100 J. mol-1

S°rxn = -429.52 J. K-1. mol-1

T = 25 °C = 298.15 K

G°rxn = H°rxn – T S°rxn

G°rxn = -633100 J. mol-1 – (298.15 K)(-429.52 J. K-1. mol-1)   

G°rxn = -505038.612 J. mol-1

G°rxn = -505.038612 K J. mol-1

If G is negative then the forward reaction is favoured.

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