Question

I WodNU TUMU and give its chemical formula, 4.After heating a salt (X) in a test tube , brown fumes of a gas (Y) are evolved leaving behind a yellow residue(Z). Identify X , Y and Z. Write the chemical reaction for it. Name the type of reaction involved
class 10​

Answer 1

Answer:

white salt is lead nitrate Pb(NO3)2

It decomposes to give brown fumes(NO2) and yellow residue(PbO). The reaction can be given as follows:

2Pb(NO3)2→2PbO+4NO2+O2