Solution of task 93 of Chemistry Book Shimanovich 2003

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93. The combustion reaction of methyl alcohol is expressed by the thermochemical equation:
CH3OH (g) + 3 / 2O2 (g) = CO2 (g) + 2H2O (g); H =?
Calculate the thermal effect of this reaction, if it is known that the molar heat of vaporization
CH3OH (g) is equal to +37.4 kJ.

Answer: -726.62 kJ.

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