Print Calculator Periodic Table Table Incorrect Question 23 of 30 Map A Sapling

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Print Calculator Periodic Table Table Incorrect Question 23 of 30 Map A Sapling Learning macmillan learning Calculate the standard change in Gibbs free energy for the following reaction at 25 C. Use the AG f values found in the Chempendix. 6H,o(g) Number AG 841.4 kJ mol There is additional feedback available! View this feedback by clicking on the bottom divider bar. Click on the divider bar again to hide the additional feedback. Close A Previous 3 Give Up & View Solution Try Again Next Exit Explanation

Explanation / Answer

From data table:

Gof(C2H6(g)) = -32.82 KJ/mol

Gof(O2(g)) = 0.0 KJ/mol

Gof(CO2(g)) = -394.359 KJ/mol

Gof(H2O(g)) = -228.572 KJ/mol

Balanced chemical equation is:

2C2H6(g) + 7O2(g) ---> 4CO2(g) + 6H2O(g)

Go rxn = 4*Gof(CO2(g)) + 6*Gof(H2O(g)) - 2*Gof( C2H6(g)) - 7*Gof(O2(g))

Go rxn = 4*-394.359 + 6*-228.572 - 2*-32.82 - 7*0.0

Go rxn = -2883 KJ/mol

Answer: -2883 KJ/mol

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