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 $