Using the Heat of Combustion of Methanol as -726

question 52

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

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Definitions:

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Material derived from living organisms, including plants, animals, and their by-products, decomposing in the environment.

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