Question

White salt of lead on heating decomposes to give brown fumes and a Residue is left behind.

i) Name the salt.
ii)Write the equation for the decomposition reaction.

Answer 1

the salt is Pb(NO3)2
2Pb(NO3)2➡ 2PbO+4NO2+O2
lead nitrate is colourless.
nitrogen dioxide(NO2) is brown fume.
lead oxide (PbO) is yellow in colour and is the residue.

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