Question

a pure red metal x on burning forms y which on further heating in the presence of hydrogen gas retains back x

a)name x and y

b)write the chemical equations for step 1 and step 2





c)name the reactions of 1 and 2

Answer 1

Answer:

copper is a red metal.

So copper on heating, is converted to blackish copper (II) Oxide.

when it is heated in the presence of hydrogen gas....

it returns back to copper and water.

so

a) x is Copper

y is Copper (II) Oxide

b) Cu + O2 --> CuO

CuO + H2 --> Cu + H2O

c) Oxidation and Reduction