Question

The standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are –382.64 kJ mol–1 and –145.6 JK–1 mol–1, respectively. Standard Gibbs energy change for the same reaction at 298 K is

• A. –339.3 kJ mol–1
• B. – 439.3 kJ mol–1
• C. –523.2 kJ mol–1
• D. –221.1 kJ mol–1

Answer 1

Answer: (A)

–339.3 kJ mol–1

Answer 2

The standard Gibbs energy change for the oxidation of ammonia at 298 K is –339.3 kJ mol–1.