Question

. Fill in the blank spaces by choosing the correct words from the given list.

List: Sulfurous, nitric acid, slowly, oxygen, phosphoric

. The nitric oxide gas reacts with the oxygen and water vapor to form ________ vapor.

Answer 1

• The given reaction is:
• $\underset{\mathrm{Nitric}\mathrm{Oxide}}{2\mathrm{NO}\left(\mathrm{g}\right)}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{Nitrogen}\mathrm{dioxide}}{2{\mathrm{NO}}_2\left(\mathrm{g}\right)}$
• $\underset{\mathrm{Nitrogen}\mathrm{Dioxide}}{2{\mathrm{NO}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{Water}}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\to \underset{\mathrm{Nitric}\mathrm{acid}}{{\mathrm{HNO}}_3\left(\mathrm{aq}\right)}+\underset{\mathrm{Nitrous}\mathrm{acid}}{{\mathrm{HNO}}_2\left(\mathrm{aq}\right)}$

Therefore, the nitric oxide gas reacts with the oxygen and water vapor to form nitric acid vapour.