iron pipes coated with zinc do not rust easily.give reasons.

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.

For rusting to occur , both iron particles and moisture in required. Zinc does not allow moisture to come in contact with the iron particles. Thus this prevents the iron pipes from rusting

Reaction of Iron Nails with Copper Sulphate Solution in Water

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

this is beacause zinc does not allow moisture tocome and contact with iron so that is why iron pipes do not rust easily.