Moles and Titrations
- Created by: Jasmin
- Created on: 05-05-13 11:55
View mindmap
- Moles and Titrations
- Concentration - measured in moles per dm3
- The more solute you dissolve in a given volume, the more crowded the solute molecules are and the more concentrated the solution
- TITRATION: allow you to find out exactly how much acid is needed to neutralise a quality of alkali
- END POINT: point at which acid and alkali have reacted completely
- Experiment
- Measure known volume of alkali in conical flask using pipette (wash with distilled water)
- Add indicator to solution in flask
- Pour acid in burette (wash with distilled water and some acid)
- Record reading on burette. Release small amount of acid into flask. Swirl flask to make sure mixed
- Keep swirling until indicator in flask changes colour. Record reading on burette
- Record reading on burette. Release small amount of acid into flask. Swirl flask to make sure mixed
- Pour acid in burette (wash with distilled water and some acid)
- Add indicator to solution in flask
- Measure known volume of alkali in conical flask using pipette (wash with distilled water)
- Phenolphthalein- pink in alkalis - colourless in acids
- Methyl orange - yellow in alkalis - red in acids
Comments
No comments have yet been made