Question

Give reason a) copper cannot displace zinc from its salt solution b)What happens when iron nails are placed in copper sulphate solution?

Answer 1

Answer :-

(a). A metal can displace a less reactive metal from its salt in an aqueous solution. But zinc is more reactive than copper. Therefore, copper cannot displace zinc from its salt solution.

(b). When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green. This reaction shows that iron is more reactive than copper as it displaces copper from its solution and iron passes into solution as Fe2+ ions and ferrous sulphate solution is formed.This reaction is a single displacement reaction.

Answer 2

I hope it will help you

Explanation:

this is answer of a)