RP9- pH changes Flashcards
1
Q
Why does a pH meter have to be calibrated?
A
so that the values for each reading are accurate
2
Q
How can you investigate how a weak acid’s pH changes as a strong base is added?
A
- eg CH3COOH and NaOH
- add small amounts of NaOH each time
3
Q
Why is stirring the solution important?
A
so all acid and base is thoroughly mixed, so pH doesn’t vary