Question

A white salt on heating decomposes to give brown fumes and a residue is left behind. (a) Name the salt. (b) Write the type of reaction. (c)Name the brown gas.(d)Write the balanced equation. (e) Name the other gas evolved.

Answer 1

Answer:

LEAD NITRATE [Pb(NO3)2]

In this reaction, thermal / heating breaks the molecule therefore it is a thermal decomposition.

The liberation of brown gas indicates the presence of nitrate salt.

EQUATION  :  

    2Pb(NO3)2(S) ----HEAT----> 2Pbo(S)+4NO2(G)+O2(G)

Other gas involved

nitrogen dioxide gas.

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Answer 2

Answer:

is given below

Explanation:

(i) LEAD NITRATE [Pb(NO3)2]

(ii) decomposition reaction

iii) nitrogen dioxidegas

iv)EQUATION :

2Pb(NO3)2(S) ----HEAT----> 2Pbo(S)+4NO2(G)+O2(G)

v)other gases is-oxygen