Question

Copper is used to make hot water tanks and not steel (an alloy of iron)

Answer 1

Answer:

it is because formula of copper =cu and that of iron =fe

formula of water = h2o

according to reactivity series fe is more reactive than +h20 so it would displace h from h2o and make the water poisonous.

but cu is less reactive than h2o so it would not react with water and keep the water save