Question

the adjoining diagram shows the heating of reddish-brown power in air . Answer the following question related to this reaction: Write the chemical reaction involved in the process, How can the above reaction be reversed ? Write the chemical equation involved. Write down the substance oxidised and reduce in reverse reaction​

Answer 1

Answer:

Explanation:

(a) Copper powder upon heating reacts with oxygen (present in air) to form cupric oxide or copper (II) oxide.

2Cu(s)+O2(g)−→heat2CuO(s)Cupric oxide

(b) )(i) Copper powder is brownish in colour.

(ii) The substance formed after heating is cupric oxide. It has black colour.

(c) The reaction can be reversed by heating cupric oxide in a current of hydrogen.

CuO(s)+H2(g)→Cu(s)+H2O(g)

In this reaction, H2 undergoes oxidation to H2O and CuO is reduced to Cu.

I hope it may help you

Answer 2

Answer:

Solution

(a) Copper powder upon heating reacts with oxygen (present in air) to form cupric oxide or copper (II) oxide. <br>

<br> (b) )(i) Copper powder is brownish in colour. <br> (ii) The substance formed after heating is cupric oxide. It has black colour. <br> (c) The reaction can be reversed by heating cupric oxide in a current of hydrogen. <br>

<br> In this reaction,

undergoes oxidation to

and CuO is reduced to Cu.