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4. Write bahnced chemical equation the following statements and state colour &nges you
c*servc
(a)lron rail is kept io copper Wlphate solution.
Olution is lead aitmte wlution.
(c)Lead nitrate powder is heatmi in a boiling b.be.
(d)Wben a piEe of zinc metal phcd in copper
(e)Barium chloride solution is to sodium sulphate
