Question

What are the different ways by which Carbon dioxide is formed?

Answer 1

Different ways by which Carbon dioxide $\mathbf{\left(}{\mathbf{CO}}_{\mathbf{2}}\mathbf{\right)}$ is formed are:

Part 1: By heating Limestone or Calcium carbonate $\mathbf{\left(}{\mathbf{CaCO}}_{\mathbf{3}}\mathbf{\right)}$:

• Limestone or Calcium carbonate $\mathbf{\left(}{\mathbf{CaCO}}_{\mathbf{3}}\mathbf{\right)}$ on heating produces Calcium oxide $\mathbf{\left(}\mathbf{CaO}\mathbf{\right)}$ and Carbon dioxide $\mathbf{\left(}{\mathbf{CO}}_{\mathbf{2}}\mathbf{\right)}$.
• The reaction is: ${\mathrm{CaCO}}_3\left(\mathrm{s}\right)\stackrel{∆}{\to }\mathrm{CaO}\left(\mathrm{s}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)$

Part 2: By reaction of Sodium carbonate $\mathbf{\left(}{\mathbf{Na}}_{\mathbf{2}}{\mathbf{CO}}_{\mathbf{3}}\mathbf{\right)}$ with dilute Hydrochloric acid $\mathbf{\left(}\mathbf{HCl}\mathbf{\right)}$:

• The reaction of Sodium carbonate $\mathbf{\left(}{\mathbf{Na}}_{\mathbf{2}}{\mathbf{CO}}_{\mathbf{3}}\mathbf{\right)}$ with dilute Hydrochloric acid $\mathbf{\left(}\mathbf{HCl}\mathbf{\right)}$ produces Sodium chloride $\mathbf{\left(}\mathbf{NaCl}\mathbf{\right)}$, Carbon dioxide $\mathbf{\left(}{\mathbf{CO}}_{\mathbf{2}}\mathbf{\right)}$ and water $\mathbf{\left(}{\mathbf{H}}_{\mathbf{2}}\mathbf{O}\mathbf{\right)}$.
• The reaction is: ${\mathrm{Na}}_2{\mathrm{CO}}_3\left(\mathrm{s}\right)+2\mathrm{HCl}\left(\mathrm{aq}\right)\to 2\mathrm{NaCl}\left(\mathrm{aq}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$

Part 3: By burning carbon or coke in air or oxygen:

• The reaction of carbon or coke $\mathbf{\left(}\mathbf{C}\mathbf{\right)}$ with Oxygen $\mathbf{\left(}{\mathbf{O}}_{\mathbf{2}}\mathbf{\right)}$ in air produces Carbon dioxide $\mathbf{\left(}{\mathbf{CO}}_{\mathbf{2}}\mathbf{\right)}$.
• The reaction is: $\mathrm{C}\left(\mathrm{s}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{CO}}_2\left(\mathrm{g}\right)$