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Using the Heat of Combustion of Methanol as -726

Question 86

Multiple Choice

Using the heat of combustion of methanol as -726.6 kJ and the following data: C(graph) + 1/2O2 → CO(g)  ΔH° = -110.5 kJ
C(graph) + O2(g) → CO2(g)  ΔH° = -393.5 kJ
H2(g) + 1/2O2(g) → H2O(l)  ΔH° = -285.8 kJ
Determine ΔH° for the following reaction:
CO(g) + 2 H2(g) → CH3OH(l)


A) -349 kJ
B) 157.8 kJ
C) -157.8 kJ
D) 128 kJ
E) -128 kJ

Correct Answer:

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