DEFINITION OF ENTHALPY CHANGES

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Last updated 9:48 AM on 5/13/26
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4 Terms

1
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Standard enthalpy change of formation

The ENTHALPY CHANGE when ONE MOLE of a substance FORMED from its ELEMENTS in their STANDARD CONDITION AND STANDARD STATE

2
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Standard enthalpy change of combustion

The ENTHALPY CHANGE when ONE MOLE of a substance is COMPLETELY BURNED UNDER EXCESS O2 under STANDARD CONDITION AND STATES.

3
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Standard enthalpy change of a reaction

The ENTHALPY CHANGE when a reaction OCCURS IN ITS MOLAR RATIO under STANDARD CONDITION AND STATE

4
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Standard enthalpy change of neutralisation

The ENTHALPY CHANGE when 1 MOLE OF WATER is formed from an ACID AND A BASE under STANDARD CONDITION AND STATE