Question

Choose from the brackets and fill in the blanks with appropriate words.

Replacing one hydrogen from sulphuric acid results in the formation of ____ salt. (normal/ acidic)

Answer 1

• Replacing one hydrogen from sulphuric acid results in the formation of _acidic__ salt.
• Example: Reaction between Sodium chloride ($\mathbf{NaCl}$) and Sulphuric acid (${\mathbf{H}}_{\mathbf{2}}{\mathbf{SO}}_{\mathbf{4}}$).
• Sodium chloride ($\mathbf{NaCl}$) on reacting with Sulphuric acid (${\mathbf{H}}_{\mathbf{2}}{\mathbf{SO}}_{\mathbf{4}}$) below $200°\mathrm{C}$ forms Sodium hydrogen sulfate (${\mathbf{NaHSO}}_{\mathbf{4}}$) and Hydrochloric acid ($\mathbf{HCl}$).
• Here, one hydrogen of Sulphuric acid is replaced to form an acid salt Sodium hydrogen sulfate.
• The reaction is shown below.
  $$\begin{gathered} \mathrm{NaCl}\left(\mathrm{aq}\right)+{\mathrm{H}}_2{\mathrm{SO}}_4\left(\mathrm{aq}\right)\stackrel{\mathrm{below}200°\mathrm{C}}{\to }{\mathrm{NaHSO}}_4\left(\mathrm{aq}\right)+\mathrm{HCl}\left(\mathrm{aq}\right) \\ \mathrm{Sodium}\mathrm{Sulphuric}\mathrm{Sodium}\mathrm{Hydrochloric} \\ \mathrm{Chloride}\mathrm{acid}\mathrm{hydrogen}\mathrm{acid} \\ \mathrm{sulphate} \end{gathered}$$
• Therefore, acidic salt is formed by replacing one hydrogen from Sulphuric acid.