RP9 investigating pH changes Flashcards
1
Q
What is an acid
A
Proton donor
2
Q
What is a bse
A
Proton acceptor
3
Q
What is an alkali
A
Base that dissolves in water
4
Q
Why does a pH meter need to be calculated
A
So pH values for each reading are accurate
5
Q
How can you investigate how a weak acids pH changes upon addition of strong base
A
Add 2cm^3 NaOH from burette to ethanoic acid, in a conical flask
Continue adding 2cm^3 of NaOH measuring pH each time
6
Q
Whys it important to stir resulting solution
A
So all acid and base is thoroughly mixed, pH doesn’t significantly vary throughout solution as would be inaccurate
