Question

Which of the following is not soluble in water?
A) copper(II) hydroxide
B) sodium chloride
C) silver nitrate
D) potassium sulfate

Answer 1

Which of the following is not soluble in water?
A) copper(II) hydroxide
B) sodium chloride
C) silver nitrate
D) potassium sulfate

=> Option D

Answer 2

answer : copper (II) hydroxide

explanation : copper (II) hydroxide is insoluble in water because all hydroxide are insoluble with the exception of those formed with alkali metal ions and barium ions.

sodium chloride is soluble in water because all halides are soluble in water with the exception of those formed with silver , lead , mercury ions.

silver nitrate is soluble in water because all nitrates are soluble in water.

potassium sulphate is soluble in water because all sulphates are soluble in water with exception of those formed with silver, strontium, calcium, barium, mercury ions.

hence, option (A) is correct choice.