Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
We know that Iron is a reactive metal . Its alloy, steel , is also relatively reactive . Copper, on the other hand, lies low on the reactivity series .
- Steel would react with hot water to form iron oxide and hydrogen gas.
- Iron is more prone to rusting than Copper.
- Copper is a better conductor of heat than steel , hence it’s more suitable for making hot water tanks.