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April 24, 2014

Homework Help: Chemistry

Posted by Ellie on Sunday, September 18, 2011 at 4:59pm.

Given the following heats of combustion.

CH3OH(l) + 3/2 O2(g) CO2(g) + 2 H2O(l) ΔHrxn = -726.4 kJ
C(graphite) + O2(g) CO2(g) ΔHrxn = -393.5 kJ
H2(g) + 1/2 O2(g) H2O(l) ΔHrxn = -285.8 kJ
Calculate the enthalpy of formation of methanol (CH3OH) from its elements.

C(graphite) + 2 H2(g) + 1/2 O2(g) CH3OH(l)

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