Question

A colorless lead salt, when heated produces a yellow residue and brown fumes. 1) Name the lead salt. 2) Name the brown fumes. 3) Write a chemical reaction involved there?

Answer 1

A colorless lead salt, when heated produces a yellow residue and brown fumes. 1) Name the lead salt. 2) Name the brown fumes. 3) Write a chemical reaction involved there?

1) Lead nitrate. Pb(NO3)2

2) Nitrogen Dioxide.

3) 2Pb(NO3)2 - - - - - > 2PbO + 4NO2 + O2.

Answer 2

(a) Pb(NO3)² is the lead salt.

(b) NO2 is the brown fumes.

(c) 2Pb(NO3)² -> 2PbO + 4NO2 + O2