Question

Which of the following statement is incorrect?

• A. Low solubility of LiF in water is due to its small hydration enthalpy.
• B. $KO_2$ is paramagnetic.
• C. Solution of sodium in liquid ammonia is conducting in nature.
• D. Sodium metal has higher density than potassium metal.

Answer 1

Answer: (A)

Low solubility of LiF in water is due to its small hydration enthalpy.

Answer 2

Low solubility of LiF in water is due to the fact that though Li+ is having high hydration enthalpy but it has higher lattice enthalpy when present in LiF. Due to higher lattice enthalpy its solubility is less.

So, the correct option is (A): Low solubility of LiF in water is due to its small hydration enthalpy.