Flashcards
Energetics
Cards in this deck (8)
- 1Standard statePressure: 100KPa(about 1 atm)
Temperature: 298K (25 degrees) - 2Standard enthalpy change of reactionThe enthalpy change when the reaction occurs in the molar quantities shown in the chemical equation, under standard conditions in their standard states
- 3Standard enthalpy change of formationThe enthalpy change when 1 mole of a compound is formed from its elements in their standard states under standard conditions
- 4Standard enthalpy change of combustionThe enthalpy change when 1 mole of a substance is completely burnt in oxygen under standard conditions
- 5Hess's LawThe total enthalpy change of a reaction is always the same, no matter which route is taken. It works out the enthalpy change via an alternative route.
- 6Enthalpy changeThe heat energy transferred in a reaction at constant pressure
- 7Exothermic-Gives out heat energy
-Delta H is negative - 8Endothermic-Absorbs heat energy
-Delta H is positive
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- A level Chemistry (Energetics) Flashcards on Energetics, created by mbaker25 on 03/06/2013.
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- mbaker25
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