Enthapy changes 1 0.0 / 5 ? ChemistryEnthalpyASOCR Created by: Leona-LCreated on: 03-12-15 16:47 Define activation energy (Ea) The minimum amount of energy required for a reaction to take place (to break existing bonds so that new bonds may form) 1 of 7 Define Standard Enthalpy Change of Reaction The change in enthalpy which accompanies a reaction in the molar quantities shown in the chemical equation in standard conditions and states. 2 of 7 Define Standard Enthalpy Change of Formation The change in enthalpy accompanying a reaction in which one mole of a compound is formed from its elements in standard conditions and states 3 of 7 Define Standard Enthalpy Change of Combustion The enthalpy change which accompanies the complete combustion of one mole of a substance in standard states & conditions 4 of 7 Define Standard Enthalpy Change of Neutralisation The change in enthalpy accompanying the reaction of an acid with a base to form one mole of water under standard conditions and in standard states 5 of 7 How do you calculate the temperature change of the surroundings (/\T)? Final T - Initial T 6 of 7 How do you calculate an energy change (q)? q = mc/\T 7 of 7
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