Question

a metal nitrate A on heating gives a metal oxide along with a brown gas B and colourless gas C aqueous solution of A on reaction with KI forms yellow precipitate of compound D identify A,BCand D identify both reaction​

Answer 1

Answer:

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Answer 2

ANSWER

The metal nitrate (A) is lead nitrate (Pb(NO

3

)

2

) on heating it produces lead oxide, Nitrogen dioxide (B) and oxygen gas (C)

(1) 2Pb(NO

3

)

2

→2PbO+4NO

2

+O

2

on reaction with potassium iodide mixture of lead iodide and potassium nitrate forms

(2) Pb(NO

3

)

2

+2KI→PbO

2

+2kNO

3

Alloy made of using lead is used in Soldering purpose.

Therefore A=[Pb(NO

3

)

2

),B=NO

2

C=O

2

D=PbI+KNO

3

(2) Decompostion type Reaction

(2) Double displacement type Reaction