Determine the free-energy change

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Question 1: Alcohols for use as biofuels can be produced from glucose that is obtained from starch and cellulose in plants. Use the information in the table below to determine the free-energy change. at 78°C, which is the boiling point of an ethanol-water azeotrope.

C6H12O6 (s) → 2 CH3CH2OH (l) + 2 CO2 (g)

Compound ΔHfº (kJ/mol) Sº [J/(mol × K)]
Glucose (s) -1,274 212
Ethanol (l) -278 161
Carbon dioxide (g) -394 214

In kJ.

Note: Report your final answer to the correct number of significant figures and do not use scientific notation when reporting your answer!

Question 2:  For a given reaction, ΔH = +21.38 kJ/mol and ΔS = +45.5 J/K . mol. Above what temperature is the reaction is spontaneous?

Reference no: EM132501377

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