Analytical Chemistry Question 280

Question: Solubility of iodine in water may be increased by adding

[DCE 2004]

Options:

A) Chloroform

B) Potassium iodide

C) Carbon disulphate

D) Sodium Thiosulphate

Show Answer

Answer:

Correct Answer: B

Solution:

The solubility of I2 in water increases by the addition of KI due to ormation of polyhaldie ion, i.e., $ I_3^{-} $

$ KI+I_2\to KI_3 $