Question

Write the correctly balanced equation for the reaction of dilute Sulphuric acid with each of the following:

1. Copper Carbonate
2. Lead Nitrate solution
3. Zinc Hydroxide.

Answer 1

Part 1: Balanced chemical equation:

It is a method to conserve the mass on both sides of the chemical reaction and ensure an equal number of atoms of each element on both sides of the reaction.

Part 2: Reactions of dilute Sulphuric acid

Copper Carbonate$\left({\mathrm{CuCO}}_3\right)$ with dilute Sulphuric acid$\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$.

1. $$\begin{gathered} {\mathrm{CuCO}}_3\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{CuSO}}_4\left(\mathrm{aq}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right) \\ \mathrm{Copper}\mathrm{Carbonate}+\mathrm{dil}.\mathrm{Sulphuric}\mathrm{acid}\to \mathrm{Copper}\mathrm{Sulphate}+\mathrm{Carbon}\mathrm{dioxide}+\mathrm{Water} \end{gathered}$$

Lead Nitrate$\left(\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2\right)$ solution with dilute Sulphuric acid$\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$:

1. $$\begin{gathered} \mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{aq}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{PbSO}}_4\left(\mathrm{s}\right)+2{\mathrm{HNO}}_3\left(\mathrm{aq}\right) \\ \mathrm{Lead}\mathrm{Nitrate}+\mathrm{dil}.\mathrm{Sulphuric}\mathrm{acid}\to \mathrm{Lead}\mathrm{Sulphate}+\mathrm{Nitric}\mathrm{acid} \end{gathered}$$

Zinc Hydroxide$\left(\mathrm{Zn}{\left(\mathrm{OH}\right)}_2\right)$ with Sulphuric acid$\left({\mathrm{H}}_2{\mathrm{SO}}_4\right)$

1. $$\begin{gathered} \mathrm{Zn}{\left(\mathrm{OH}\right)}_2\left(\mathrm{s}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\to {\mathrm{ZnSO}}_4\left(\mathrm{aq}\right)+2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right) \\ \mathrm{Zinc}\mathrm{Hydroxide}+\mathrm{dil}.\mathrm{Sulphuric}\mathrm{acid}\to \mathrm{Zinc}\mathrm{Sulphate}+\mathrm{Water}. \end{gathered}$$