Flashcards
Enthalpy change definitions
Flashcards do conjunto (11)
- 1Standard enthalpy of formationthe enthalpy change when one mole of a compound is formed from its constituent elements under standard conditions, all products and reactants in their standard states
- 2standard enthalpy of atomisationthe enthalpy change which accompanies the formation of one mole of gaseous atoms from the element in its standard state, under standard conditions
- 3first ionisation energythe standard enthalpy change when one mole of gaseous atoms is converted into one mole of gaseous ions, each with a single positive (unipositive) charge
- 4second ionisation energyrefers to the loss of a mole of electrons from a mole of unipositive ions
- 5first electron affinitythe standard enthalpy change when one mole of gaseous atoms is converted to one mole of gaseous ions, each with a single negative (uninegative) charge
- 6second electron affinitythe enthalpy change when a mole of electrons is added to a mole of gaseous ions, each with a single negative charge, to form ions each with two negative charges
- 7lattice formation enthalpythe standard enthalpy change when one mole of solid ionic compound is formed from its gaseous ions
- 8lattice dissociation enthalpywhen one mole of ionic compound separates into its gaseous ions
- 9enthalpy of hydrationthe standard enthalpy change when water molecules surround one mole of gaseous ions
- 10enthalpy of solutionthe standard enthalpy change when one mole of solute dissolves completely in sufficient solvent to form a solution in which the molecules or ions are far enough apart not to interact with each other
- 11mean bond enthalpythe enthalpy change when one mole of gaseous molecules each breaks a covalent bond to form two free radicals, averaged over a range of compound
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- Flashcards for learning the enthalpy change definitions for AQA A2 chemistry (unit 5 chapter 12.1)
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- emilyorr97
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