Question

A metal nitrate on heating gives yellow eyes brown metal oxide with a gas be at a colourless gas see the metal is used in alloy which is used for soldering purpose actress solution of a reaction with potassium iodide form yellow precipitate b side abcd at all equation

Answer 1

hay his your answer:---The metal nitrate (A) is Lead nitrate (Pb(NO₃)₂) On heating it produces Lead oxide, Nitrogen dioxide (B) and oxygen gas (C)           2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂ On reaction with potassium iodide mixture of lead iodide and potassium nitrate forms.        Pb(NO₃)₂ + 2KI → PbI₂ + 2KNO₃   Alloy made of using lead is used in soldering purposes. Therefore       A = (Pb(NO₃)₂)                          B = NO₂                          C = O₂                          D = PbI + KNO₃ (mixture of compounds)