Question

Why lead form a yellow precipitate in lead conformation in inorganic semi micro analysis

Answer 1

Confirmatory tests for Lead (II) ion (Pb2+) Black precipitate of PbS formed in the group analysis dissolves in 50% nitric acid due to the formation of soluble lead nitrate. On adding sulphuric acid to the soluble lead nitrate, lead sulphate precipitates.

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Answer 2

Classical qualitative inorganic analysis is a method of analytical chemistry which seeks to find the elemental composition of inorganic compounds. It is mainly focused on detecting ions in an aqueous solution, therefore materials in other forms may need to be brought to this state before using standard methods. The solution is then treated with various reagents to test for reactions characteristic of certain ions, which may cause color change, precipitation and other visible changes.

Qualitative inorganic analysis is that branch or method of analytical chemistry which seeks to establish the elemental composition of inorganic compounds through various reagents.