Chemistry A2 Key terms 0.0 / 5 ? ChemistryEnthalpyA2/A-levelCCEA Created by: DekuSkrubCreated on: 16-10-23 17:54 Lattice Enthalpy The enthalpy change when one mole of an ionic compound is converted to gaseous ions 1 of 12 Enthalpy of atomisation The enthalpy change when one mole of gaseous atoms are formed from its elements in its standard state 2 of 12 Electron affinity The enthalpy change when one mole of gaseous atoms is converted into gaseous ions with a single negative charge 3 of 12 First ionsiation energy The energy required to convert one mole of gaseous atoms into gaseous ions with a single positive charge 4 of 12 Enthalpy of formation The enthalpy change when one mole of a compound is formed from its elements under standard conditions 5 of 12 Bond enthalpy The energy required to break one mole of a given bond averaged over many compounds 6 of 12 Enthalpy of hydration The enthalpy change when one mole of gaseous ions is converted to one mole of aqeous ions 7 of 12 Enthalpy of solution The enthalpy change when one mole of a solute dissolves in water 8 of 12 Rate of reaction The change of the concentration of a reactant or product with respect to time 9 of 12 Order of a reaction (Reactant) Order of a reaction (Overall) Power to which concentration of a reactant is raised in rate equation Sum of the powers to which the concentration terms are raised in the rate equation 10 of 12 Rate constant Proportionally constant which links the rate of reaction to the concentrations in the rate equation 11 of 12 Rate determining step Slowest step in the mechanism reaction 12 of 12
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