3
QuizMultiple Choice

Enthalpy, Entropy, and Free Energy

Question 3 • *CR Chemistry S1 [Q3050OX]

This is the equation for the dissociation of ammonia gas at 293 K. H = 145 kJ and S = 195 J/k.2NH3(g) N2(g) + 3H2(g) Which correctly states the G for this dissociation and whether the process is spontaneous or nonspontaneous? Use G = H – TS.

Question illustration
Answer
A
–87.87 kJ, spontaneous
B
–50 kJ, spontaneous
C
87.9 kJ, nonspontaneous
D
202.14 kJ, nonspontaneous
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