Enthalpy Changes Flashcards
1
Q
What is activation energy?
A
The minimum energy required for a reaction to take place
1
Q
What are standard conditions?
A
100kPa, 298 K
2
Q
Enthalpy change of formation=
A
Enthalpy change when 1 mole of a compound is formed from its elements in their standard states, under standard conditions
3
Q
Enthalpy change of combustion=
A
Enthalpy change when 1 mole of a substance burns completely with oxygen
4
Q
Enthalpy change of neutralisation=
A
Enthalpy change when 1 mole of water is formed from neutralisation
5
Q
What is an exothermic reaction?
A
When more energy is released by bond forming than is required for bond breaking
6
Q
What is an endothermic reaction
A
When more energy is needed for bond breaking than is released by bond forming
7
Q
A
