Question

Give the balanced equations for the following reactions

(i) Dilute Nitric acid and Copper carbonate

(ii) Silver nitrate solution and Sodium chloride solution

Answer 1

Part 1: Dilute Nitric acid and Copper carbonate

1. $\underset{(\mathrm{Copper}\mathrm{carbonate})}{{\mathrm{CuCO}}_3\left(\mathrm{s}\right)}+\underset{(\mathrm{Nitric}\mathrm{acid})}{2{\mathrm{HNO}}_3\left(\mathrm{aq}\right)}\to \underset{(\mathrm{Copper}\mathrm{nitrate})}{\mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{aq}\right)}+\underset{\left(\mathrm{Water}\right)}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}+\underset{(\mathrm{Carbon}\mathrm{dioxide})}{{\mathrm{CO}}_2\left(g\right)}$
2. Adding Copper carbonate and dilute Nitric acid gives Copper nitrate and water, and Carbon dioxide is liberated.

Part 2: Silver nitrate solution and Sodium chloride solution

1. $\underset{(\mathrm{Silver}\mathrm{nitrate})}{{\mathrm{AgNO}}_3\left(\mathrm{aq}\right)}+\underset{(\mathrm{Sodium}\mathrm{chloride})}{\mathrm{NaCl}\left(\mathrm{aq}\right)}\to \underset{(\mathrm{Silver}\mathrm{chloride})}{\mathrm{AgCl}\left(\mathrm{s}\right)(\downarrow )}+\underset{(\mathrm{Sodium}\mathrm{nitrate})}{{\mathrm{NaNO}}_3\left(\mathrm{aq}\right)}$
2. Adding Silver nitrate solution and Sodium chloride solution gives white ppt of Silver chloride and Sodium nitrate.

Therefore, balanced chemical equations are:-

1. $\underset{(\mathrm{Copper}\mathrm{carbonate})}{{\mathrm{CuCO}}_3\left(\mathrm{s}\right)}+\underset{(\mathrm{Nitric}\mathrm{acid})}{2{\mathrm{HNO}}_3\left(\mathrm{aq}\right)}\to \underset{(\mathrm{Copper}\mathrm{nitrate})}{\mathrm{Cu}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{aq}\right)}+\underset{\left(\mathrm{Water}\right)}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}+\underset{(\mathrm{Carbon}\mathrm{dioxide})}{{\mathrm{CO}}_2\left(g\right)}$
2. $\underset{(\mathrm{Silver}\mathrm{nitrate})}{{\mathrm{AgNO}}_3\left(\mathrm{aq}\right)}+\underset{(\mathrm{Sodium}\mathrm{chloride})}{\mathrm{NaCl}\left(\mathrm{aq}\right)}\to \underset{(\mathrm{Silver}\mathrm{chloride})}{\mathrm{AgCl}\left(\mathrm{s}\right)}+\underset{(\mathrm{Sodium}\mathrm{nitrate})}{{\mathrm{NaNO}}_3\left(\mathrm{aq}\right)}$