Definitions of enthalpy changes - (A2 Chemistry)
A quiz testing the definitions of all the enthalpy changes required for AQA A2 Chemistry Unit 5 - Thermodynamics
- Created by: Imogen Makin
- Created on: 31-05-11 15:30
Other questions in this quiz
2. What is the first ionisation enthalpy?
- The standard enthalpy change when 1 mol. of gaseous atoms is converted into 1 mol. of gaseous ions each with a single positive charge
- The standard enthalpy change when 1 mol. of gaseous atoms is converted into 1 mol. of gaseous ions each with a single negative charge
- The standard enthalpy change when water molecules surround 1 mol. of gaseous ions
3. What is the standard enthalpy of atomisation?
- The enthalpy change which accompanies the formation of 1mol. of gaseous atoms from the element in its standard state under standard conditions
- The standard enthalpy change when 1 mol. of gaseous atoms is converted into 1 mol. of gaseous ions each with a single positive charge
- The enthalphy change when 1 mol. of compound is formed from its constituent elements under standard conditions. All reactants and products in their standard states
4. What is bond dissociation enthalpy?
- The enthalpy change when 1 mol. of gaseous molecules each break a covalent bond to form two free radicals, averaged over a range of compounds
- The standard enthalpy change when 1 mol. of solute dissolves completely in sufficient solvent to form a solution in which the molecules or ions are far enough appart not to interact with each other
- The standard enthalpy change when water molecules surround 1 mol. of gaseous ions
5. Define First electron affinity.
- The standard enthalpy change when 1 mol. of gaseous atoms is converted into 1 mol. of gaseous ions each with a single negative charge
- The standard enthalpy change when 1 mol. of gaseous atoms is converted into 1 mol. of gaseous ions each with a single positive charge
- The standard enthalpy change when 1 mol. of solid ionic compound is formed from its gaseous ions
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