Enthalpy
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- Created on: 10-05-19 13:19
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- Enthalpy
- Enthalpy Notation
- Enthalpy change is heat energy transferred in reaction at constant pressure
- Units = kj/mol
- Standard conditions = 100kpa and a stated temperature
- r = reaction, c = combustion, f = formation
- Exothermic Reactions
- Give out energy to their surroundings
- Temperature in reaction usually increases
- Products of the reaction end up with less energy than the reactants
- Enthalpy change = negative
- Oxidation is usually exothermic
- Endothermic Reactions
- Take in energy from surroundings
- Temperature in reaction usually falls
- Products of reaction have more energy than reactants
- Enthalpy change = positive
- Enthalpy Notation
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