on placing a piece of aluminium metal in The solution of copper sulphate , it acquires a shining silvery surface but when it is placed in a solution of magnesium sulphate ,no change is observed .explain .
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Aluminium is reactive than copper. As it is reactive, copper in copper sulphate is displaced and it gets a silvery shine.
Aluminium is not reactive than magnesium hence no reaction is observed
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hey ,here is your answer
When a piece of zinc metal is placed in a solution of mercuric chloride a white layer of mercury is deposited on zinc metal to give it silvery shining look. This is because mercury is lower to zinc in reactivity series and hence zinc can displace mercury from HgCl2
But when zinc is placed in a solution of magnesium sulphate there is no change this is because magnesium is above zinc in the reactivity series and hence zinc cannot displace magnesium from its salt solution
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