5.1 - Moles 2 Flashcards
1
Q
How do you calculate moles?
A
Mass / RFM
2
Q
How do you calculate the moles of a gas?
A
Volume / 24
3
Q
How do you calculate concentration?
A
Moles / Volume
4
Q
1dm3 =
A
1000cm3
5
Q
Volume is measured in…
A
dm3
6
Q
What is titration?
A
practical method used to measure the volume of acid needed to neutralise a particular volume of alkali
7
Q
What is the function of a volumetric pipette?
A
Measures out 25cm3 very accurately
8
Q
What is the function of a burette?
A
Measure any volume to the nearest 0.05cm3
9
Q
Why do you repeat a titration?
A
to get concordant (within 0.2cm3) titres
10
Q
How do you record a titration result?
A
-nearest 2d.p. (0.00 or 0.05)
-read downwards
