Question

Salt Q is white in colour . On strong heating it produces buff yellow residue and liberates reddish brown gas . Solution of salt Q produces chalky white insoluble precipitate with excess of ammonium hydroxide

Answer 1

The salt is lead nitrate. On heating it forms lead oxide and liberates nitrogen dioxide which is reddish brown in colour. the salt lead nitrate produces chalky white precipitate which is insoluble in excess of ammonium hydroxide.

Explanation:

• even though both lead nitrate and zinc nitrate are are white in colour that can be differentiated by the use of excess of ammonium hydroxide solution

• lead nitrate is in soluble in excess of ammonium hydroxide solution where is zinc nitrate is soluble in excess of ammonium hydroxide solution. The reddish brown gas is is that of nitrogen dioxide..

To know more,

to distinguish soluble salts of zn and pb. what is used​ - Brainly.in

https://brainly.in/question/15534746

Answer 2

Answer:

Q- lead nitrate is the gas