8 Energetics I Flashcards
1
Q
Enthalpy change
A
Heat energy change measured at constant pressure.
2
Q
Enthalpy change of reactions, ArH
A
When quantities of substances in standard stated react completely under standard conditions.
3
Q
Enthalpy change of combustion, AcH
A
One mole of a substance is burned completely in oxygen under standard conditions.
4
Q
Enthalpy change of neutralisation, AnH
A
Solutions of acid and alkali react together under standard conditions to produce one mole of salt.
6
Q
Bond Enthalpy
A
The enthalpy change when one mole of a bond in gaseous state is broken.
8
Q
Specific Heat Capacity
A
The energy required to raise 1g of substance by 1K without a change of state.
10
Q
Energy transferred
A
= mass * specific heat capacity * temperature change
Q = mcT
