Question

${\mathrm{CuCO}}_3$(green) $\to$$\mathrm{CuO}$(black) +${\mathrm{CO}}_2$(g)

(a) What is the reaction type?

(b) Mention the physical state of the reactants and products.

Answer 1

(a) The given chemical equation is a type of decomposition reaction.

• In a decomposition reaction, one chemical substance is decomposed into two or more products.
• Copper carbonate (${\mathrm{CuCO}}_3$) which is green in color when heated is decomposed into black colored Copper oxide($\mathrm{CuO}$) and Carbon dioxide(${\mathrm{CO}}_2$).

(b) $\underset{\mathrm{Copper}\mathrm{carbonate}}{{\mathrm{CuCO}}_3\left(\mathrm{s}\right)}\stackrel{∆}{\to }\underset{\mathrm{Copper}\mathrm{oxide}}{\mathrm{CuO}\left(\mathrm{s}\right)}+\underset{\mathrm{Carbon}\mathrm{dioxide}}{{\mathrm{CO}}_2\left(\mathrm{g}\right)}$