Question 21
Solubility and SolutionsWhich of the following salts is slightly soluble in water?
- A.AgCl
- B.CaSO4
- C.Na2CO3
- D.PbCl2
Show the answer and explanation
Answer: B (CaSO4)
Explanation
Calcium tetraoxosulphate(VI) dissolves only slightly in water (it causes permanent hardness); AgCl is insoluble and Na2CO3 is very soluble.