Given the heat change per mole for the combustion of methanol (-726 kJ/mol), predict the heat change that would occur if 0.200 mol of methanol undergoes the same reaction

Question

Chemistry

Heidi Spence

9 April, 17:42

Given the heat change per mole for the combustion of methanol (-726 kJ/mol), predict the heat change that would occur if 0.200 mol of methanol undergoes the same reaction

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Answers (1)

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Madilynn Vasquez · Answer 1

-145.2kJ

Explanation:

Enthalpy is an extensive property as its value depends on the amount of substance present in the system.

If the enthalpy for one mole of methanol = - 726 kJ/mol;

The Enthalpy for 0.2 mol is given as;

Enthalpy = 0.200 * 726

Enthalpy = - 145.2kJ

It would take - 145.2kJ for 0.200 mol of methanol to undego the combustion reaction.