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Question
At 2600 K, ΔG = 775 kJ for the vaporization of boron carbide:B4C(s) ⇌ 4 B(g) + C(s)
Find ΔG and determine if the process is spontaneous if the reaction vessel contains 4.00 mol B4C(s), 0.400 mol of C(s), and B(g) at a partial pressure of 1.0 10-5 atm. At this temperature, R T = 21.6 kJ.
A) ΔG = -270 kJ; spontaneous.
B) ΔG = -270 kJ; nonspontaneous.
C) ΔG = -220 kJ; spontaneous.
D) ΔG = -220 kJ; nonspontaneous.
Answer
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