Q39 / 180 · COMEDK 2019 · Chemistry

In the detection of III group basic radicals $\mathrm{NH}_{4} \mathrm{OH}$ is added after $\mathrm{NH}_{4} \mathrm{Cl}$ to

  • A
    increase in the ionisation of $\mathrm{NH}_{4} \mathrm{OH}$
  • B
    increase in the ionisation of salt solution
  • C
    decrease in the jonisation of salt solution
  • Correct answer
    D
    decrease in the ionisation of $\mathrm{NH}_{4} \mathrm{OH}$

Solution

In the detection of III group, basic radicals $\mathrm{NH}_{4} \mathrm{OH}$ is added after $\mathrm{NH}_{4} \mathrm{Cl}$ to decrease the ionisation of $\mathrm{NH}_{4} \mathrm{OII}$ due to common ion effect.

Hence, the correct answer is option: 'D'.

More Practical Chemistry Questions