C5 Flashcards
1
Q
What titration experiment can you use to found out concentration?
A
- Use pipette to add some alkali to conical flask along with 2 drops of indicator
- Fill burette with indicator below eye level
- Using burette add the acid to the alkali a bit at a time and give a regular swirl
- add slowly when you feel you’re close to colour change
- indicator changes colour when all alkali has been neutralised
- record volume of acid need to neutralise alkali
2
Q
What colour is litmus in an acid and an alkali?
A
acid-red
alkali-blue
3
Q
What colour is phenolphthalein in acid and alkali?
A
acid-clear
alkali-pink
