Question

Few drops of aqueous solution of ammonium chloride are put on a universal indicator paper. The paper turns pink.

Choose the correct option.

पर्याय

• Nature	Ammonium chloride is a salt of ...	Range of pH
  acidic	weak acid and strong base	less than 7

• Nature	Ammonium chloride is a salt of ...	Range of pH
  basic	weak acid and strong base	more than 7

• Nature	Ammonium chloride is a salt of ...	Range of pH
  acidic	strong acid and weak base	less than 7

• Nature	Ammonium chloride is a salt of ...	Range of pH
  basic	strong acid and strong base	7

Answer 1

Nature	Ammonium chloride is a salt of ...	Range of pH
acidic	strong acid and weak base	less than 7

Explanation:

Ammonium Chloride (NH₄Cl) is:

Nature: Acidic

It is formed from the reaction of a strong acid (HCl) and a weak base (NH_3).

\[\ce{NH3 + HCl -> NH4Cl}\]

Reason for Acidity:

In aqueous solution, ammonium chloride dissociates into ammonium ions \[\ce{NH^+_4}\] and chloride ions (Cl⁻).

The \[\ce{NH^+_4}\]​ ion is the conjugate acid of the weak base ammonia (NH₃), and it releases hydrogen ions (H⁺) in water, making the solution acidic:

\[\ce{NH^+_4 + H2O -> NH3 + H3O+}\]

pH Range:

Because it releases H⁺ ions in solution, it decreases the pH, making it less than 7.