Question

In which of the following solvents, KI has highest solubility? The dielectric constant $\left(ϵ\right)$ of each liquid is given in parentheses.

• A. $C_6{H}_6(ϵ=0)$
• B. $\left(C{H}_3{)}_{2}CO\right(ϵ=21)$
• C. $C{H}_{3}OH(ϵ=32)$
• D. $CC{l}_4(ϵ=0)$

Answer 1

The correct option is C $C{H}_{3}OH(ϵ=32)$

KI is an ionic compound. Hence, it will be most soluble in apolar solvent, which has a high value of dielectric constant. Hence, $C{H}_{3}OH$ with the highest value of dielectric constant among the given options will provide high solubility.