Question #21639

1 Answer
Chuck W.
Apr 1, 2015

Enthalpy is defined as the amount of heat that must be added to a substance at constant pressure, starting at 0 Kelvins, to bring that substance to a given temperature. The more heat added, the greater the temperature.

For simple heating (with no phase changes), the enthalpy change of a substance heated from #T_1# to #T_2# is

#DeltaH=int_(T_1)^(T_2)C_PdT~~C_P(T_2-T_1)#
where #C_P# is the heat capacity of the sample at constant pressure.

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