# What is the solid produced when zinc carbonate decomposes?

Jun 27, 2016

Zinc oxide.

#### Explanation:

Zinc carbonate, ${\text{ZnCO}}_{3}$, undergoes thermal decomposition to form zinc oxide, $\text{ZnO}$, a solid that is white in color when cold and yellow in color when hot, and carbon dioxide gas, ${\text{CO}}_{2}$

${\text{ZnCO"_ (3(s)) stackrel(color(white)(a)color(red)(Delta)color(white)(aaa))(->) "ZnO"_ ((s)) + "CO}}_{2 \left(g\right)}$ $\uparrow$

This reaction is characteristic to metal carbonates, which decompose when heated to form the oxide of the metal and carbon dioxide gas.