Tuesday
September 16, 2014

Homework Help: Chemistry

Posted by Lisa on Tuesday, June 28, 2011 at 7:53pm.

Energy, q, w, Enthalpy, and StoichiometrySource(s):
Consider the combustion of liquid methanol, CH3OH (l).

CH3OH (l) +3/2O2 (g) = CO2 (g) + 2H2O(l) H = -726.5 kJ
Part A:
What is the enthalpy change for the reverse reaction?
Express your answer using four significant figures.
Answer I got right: 726.5 kJ
Part B:
Balance the forward reaction with whole-number coefficients:
CH3OH (l) +3/2O2 (g) = CO2 (g) + 2H2O(l) H
Answer I got right: 2,3,2,4
Part C:
What is for the reaction represented by this equation?
Express your answer using four significant figures.
Answer : I am stuck. ?????

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