Question

Giúp mình nhé, gấp ạ :3

Answer 1

1. \(Ca^{2+}+CO_3^{2-}\rightarrow CaCO_3\downarrow\)

Answer 2

2. \(Fe^{2+}+OH^-\rightarrow Fe\left(OH\right)_2\downarrow\)

Answer 3

3. \(HCO_3^-+OH^-\rightarrow CO_3^{2-}+H_2O\)