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Use the Following Data to Construct a Thermochemical Cycle for the Formation

Question 24

Multiple Choice

Use the following data to construct a thermochemical cycle for the formation of ZnS from its elements and use the cycle to calculate the enthalpy of formation of ZnS.
Zn (s) \rightarrow Zn (g) 130 kJ mol-1
Zn (g) \rightarrow Zn+ (g) 906 kJ mol-1
Zn+ (g) \rightarrow Zn2+ (g) 1733 kJ mol-1
ZnS (s) \rightarrow Zn2+ (g) + S2- (g) 3048 kJ mol-1
S (s) \rightarrow S (g) 233 kJ mol-1
S (s) \rightarrow S- (g) -200 kJ mol-1
S- (s) \rightarrow S2- (g) 456 kJ mol-1


A) 200 kJ mol-1
B) -200 kJ mol-1
C) 33 kJ mol-1
D) 2848 kJ mol-1

Correct Answer:

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