Combustion Reactions Flashcards
1
Q
What equipment is needed for an enthalpy change of combustion reaction?
A
- thermometer
- water
- colorimeter
- spirit burner
- tripod
- gauze
- (ethanol)
2
Q
Why may the enthalpy of combustion values obtained from a calorimeter be different to calculated values, what factors?
A
- heat loss to surroundings
- incomplete combustion of fuel
- heat energy that was transferred to beaker has not been taken into account
- some fuel evaporates
3
Q
Why may the enthalpy of combustion values obtained from a calorimeter be different to calculated values?
A
The data book values are based on calculations made under standard conditions
4
Q
What are some improvements that can be made for the calorimetry experiment?
A
- add a lid
- reduce distance bw flame and beaker
- insulate beaker
