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15 cards from this deck
Increases
Negative (ΔH<0\Delta H < 0ΔH<0)
Combustion of hydrocarbons, neutralisation
Decreases
Positive (ΔH>0\Delta H > 0ΔH>0)
Thermal decomposition, photosynthesis
Heat released when 1 mole completely burned in excess O2O_2O2
Bomb calorimeter
Energy to break 1 mole of a covalent bond in gas
412 kJ/mol
Energy cannot be created or destroyed, only transferred or transformed
Total enthalpy change same regardless of pathway
Enthalpy change when 1 mole formed from elements in std states
Calorific value of fuels or food
Energy released when 1 kg of fuel is burned
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