Unit 3 - Enthalpy Flashcards
1
Q
What kind of process is bond making?
A
Exothermic
2
Q
How is overall energy change calculated using bond enthalpies?
A
Find:
Total energy for bonds broken
Total energy for bonds made
Overall energy = bonds broken + bonds made
3
Q
What is the enthalpy of combustion?
A
The enthalpy change when 1 mole of a substance is burned completely in oxygen
4
Q
What is the enthalpy of solution?
A
The enthalpy change when 1 mole of a substance is completely dissolved in water
5
Q
What is the enthalpy of neutralisation?
A
The enthalpy change when 1 mole of water is formed in a neutralisation reaction
6
Q
What kind of process is bond breaking?
A
Endothermic
7
Q
What does Hess’s law state?
A
The enthalpy change for a reaction is independent of the route taken
