7) What is displacement reaction? Explain the statement iron can displace copper from its salt solution? but copper cannot displace iron from its salt solution.
Answers
Displacement Reaction--
A displacement reaction is the reaction in which a metal displaces or replaces a less reactive metal from the solution of its salt.
Copper cannot displace iron from its salt solution because it is less reactive than iron...
Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions.
Example : Reaction of iron nails with copper sulphate solution.
Chemical reactivity of metals is linked with their relative positions in the activity series. Certain metals have the capacity to displace some metals from the aqueous solutions of their salts.A metal placed higher in the activity series can displace the metal that occupies a lower position from the aqueous solution of its salt. The displacement reaction is not limited to metals only. Even non-metals can take part in these reactions.
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