For Hydrogen Sulfide, H₂S, the Standard Enthalpy of Formation Is

question 5

Multiple Choice

For hydrogen sulfide, H₂S, the standard enthalpy of formation is -20.2 kJ mol^-1 and the standard entropy of formation is +43.0 J mol^-1 at 298 K. Calculate the standard Gibbs energy of formation at this temperature.

• A) -33.0 kJ mol^-1
• B) +12.8 kJ mol^-1
• C) -20.5 kJ mol^-1
• D) -7.4 kJ mol^-1

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