A mass of 2.72 g of an alloy containing Pb, required for dissolved in `HNO_3` containing `50%
Channel: Doubtnut
Date: 2020-07-12

A mass of 2.72 g of an alloy containing Pb, required for dissolved in `HNO_3` containing `50%` by mass of `HNO_3`. When a `H_(2)SO_(4)` solution was added, 1.5 g of precipitate (A) appeared `H_(2)S` gas was then passed into the remaining solution a secfond precipitate was formed which when calcined in air produced 1.6 g of a compound B. Determine the composition of an alloy. (Al does not form `Al_(2)S_(3)` due to the hydrolysis of sulphide).