Question

Can we use ammonium sulphate instead of ammonium chloride in group 3

Answer 1

Explanation:

https://www.topperlearning.com/answer/why-is-ammonium-chloride-added-before-addition-of-ammoniun-hydroxide-in-preciptn-of-grp-3-cations/xfdg9ull

Answer 2

No , we cannot use ammonium sulfate instead of ammonium chloride during test of group 3.

• The analysis of groups are done on the basis of selective precipitation of the ions of the given group.
• The reagents are used such that the ions of the lower groups are not precipitated.
• If we use ammonium sulfate during the analysis of group 3 the ions of group 6(Mg,Ca,sr,etc,) will also be precipitated as their corresponding sulfates along with hydroxides of group 3, creating ambiguity in identification of ions.