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5 Cards in this Set
- Front
- Back
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Define the molar heat of fusion |
The energy required to change one mole of a substance from a solid to a liquid, at its melting point, is the molar heat of fusion. |
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Define the molar heat of vaporisation |
The energy required to change one mole of a substance from a liquid to a gas, at its boiling point, is the molar heat of vaporisation. |
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Define the standard heat of combustion |
The enthalpy change when one mole of a substance is completely burnt in oxygen, with all reactants and products in their standard states. |
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Define the standard heat of formation |
The enthalpy change when one mole of a substance is formed from its elements, with all reactants and products in their standard states. |
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What is the standard heat of formation for all elements? |
Zero. |
