What is lead-sulphide test for sulphur?

Asked by Topperlearning User | 28th Jun, 2016, 04:38: PM

Expert Answer:

The sodium fusion extract is acidified with acetic acid and lead acetate is added to it. A black precipitate of lead sulphide indicates the presence of sulphur.

 
S2-   +  Pb2+   →    PbS
                           Black

Answered by  | 28th Jun, 2016, 06:38: PM