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Define enthalpy of combustion....

Define enthalpy of combustion.

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Enthalpy of combustion of a substance is the enthalpy produced when one mole of the substance is completely burnt in air or oxygen at a given temperature.
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Knowledge Check

  • The enthalpy of combustion of methane at 25^(@)C is 890 kJ. The heat liberated when 3.2 g of methane is burnt in air is

    A
    445kJ
    B
    278kJ
    C
    `-890kJ`
    D
    178kJ

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