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8 March, 13:29

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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  1. 8 March, 13:57
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    -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.
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