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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