Which one of the following statements is incorrect?

Question

Which one of the following statements is incorrect? (A) The degree of ionisation of a weak electrolyte increases with dilution (B) Strong electrolytes are ionised completely at all concentrations (C) Addition of NH 4 Cl to NH 4 OH increases the ionisation of the latter (D) Increase of temperature increases the ionisation

Tardigrade Admin · Accepted Answer

Statement (c) is incorrect. It's correct form is as follows: Addition of NH 4 Cl to NH 4 OH decreases the ionisation of NH 4 OH due to common ion effect. Rest other statements are correct.

Q. Which one of the following statements is incorrect?

The degree of ionisation of a weak electrolyte increases with dilution

Strong electrolytes are ionised completely at all concentrations

Addition of $N H_{4} Cl$ to $N H_{4} O H$ increases the ionisation of the latter

Increase of temperature increases the ionisation

Statement (c) is incorrect.
It's correct form is as follows :
Addition of $N H_{4} Cl$ to $N H_{4} O H$ decreases the ionisation of $N H_{4} O H$ due to common ion effect.
Rest other statements are correct.