03 HW - Quantitative Gibbs

# 03 HW - Quantitative Gibbs - C 2 H 6(g 2Cl 2(g → C 2 H 4...

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Name: _________________________________________ Date: ____________ WKST #5 : Quantitative Gibb’s Free Energy (50 points) Period: __________ 1. What are the two formulas that can be used to calculate Gibb’s Free Energy? 2. What information does Gibb’s Free Energy provide about a reaction? Follow the procedure below to answer each of the long answer questions to receive full credit. Write the formula Substitute the appropriate numbers Solve the problem and include the appropriate units Place a BOX around your answer so I can find it easily 3. Given the following reactions (at 298 K and 1 atm) and the thermodynamic data below, which reaction will be spontaneous? Support your answer mathematically. a. CH 3 OH (l) + 3/2 O 2 (g) → CO 2 (g) + 2 H 2 O (g) ΔH = -638.4 kJ/mol ΔS = 156.9 J /mol K b. 2 NO 2 (g) → N 2 O 4 (g) ΔH = - 57.2 kJ/mol ΔS = -275.9 J/mol K 4. Given the following reaction (at 298 K and 1 atm) and the thermodynamic data below:

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