Question

When a green powder is heated,it turns black and gas is produced.Is this a reversible or irreversible change?Explain your answer.

Answer 1

irreversible change

Step-by-step explanation:

It is an irreversible process, since when the green powder is heated and turns black, producing a gas, new chemical compounds are formed. A similar example is the reaction to the decomposition of copper carbonate, which is heated to produce carbon dioxide. The reaction is as follows:

CuCO3 (g) → CO2 (g) + CuO (s)

Answer 2

This is an irreversible change.

When the material heated, it turns into black and producing gas. This indicates that there is a chemical reaction occurs that creates a new black-colored material and gas material. A chemical reaction is one of irreversible change.