calorimetry
- Created by: Margaret Hobart
- Created on: 02-05-21 14:20
View mindmap
- calorimetry
- Q=mc????T
- Q= heat lost/gained (J)
- m = mass of liquid being heated (g)
- c = specific heat capacity of water (4.18) g-1k-1
- ????T= temp change (K)
- experiment to determine enthalpy change
- neutralisationreaction
- displacementreaction
- combustion
- dissolution
- to find enthalpy of an alcohol, burn it inside a calorimeter
- as the fuel burns it heats the water
- may be inaccurate
- lose heat to surroundings
- incomplete combustion
- flammable liquids are volatile and so some may evaporate
- to find enthalpy of a neutralisation reaction
- 1. add known volume of acid to insulated container (polystyrene cup) and measure temperature every minute for 4 minutes
- 2. add known volume of alkali and record temperature every minute for 15 minutes (and stir)
- 3. calculate ????T and use that to calculate enthalpy change
- 2. add known volume of alkali and record temperature every minute for 15 minutes (and stir)
- 1. add known volume of acid to insulated container (polystyrene cup) and measure temperature every minute for 4 minutes
- Q=mc????T
Comments
No comments have yet been made