Common mistake:
(i) didn't label the diagram, miss the stopcock in the burette
(ii) CALCULATE, so you have to show the step!! remember 2d.p. in the answer!!!
(iv) unable to mention Ag+ react with Br- or unable to mention how the calculation will be affected
Volumetric analysis
Determine the concentration of Cl- in an impure water sample
Reference: 2019 Paper 2 Q3(b)
https://www.youtube.com/watch?v=5syhzHDH8-g&t=27s
