Question
Chemistry Question on Surface Chemistry
Which one of the following impurities present in colloidal solution cannot be remove by electrodialysis?
A
Sodium chloride
B
Potassium sulphate
C
Urea
D
Calcium chloride
Answer
Urea
Explanation
Solution
Electrolysis is the technique by which electrolytic impurities can be removed. Hence, urea, being non-electrolyte cannot be removed by this method.