Question

What can be said about a small Ksp value?

Answer 1

Answer:

The correct answer is option B.

Explanation:

Solubility product is defined as the product of concentration of ions present in a solution each raised to the power its stoichiometric ratio.

The equation for the ionization of the magnesium hydroxide is given as:

$A_xB_y\leftrightharpoons xA^{y+}+yB^{x-}$

                      xS      yS

Here, S = concentration of compound dissolved in solvent via dissociation

Expression for the solubility product of $A_xB_y$ will be:

$K_{sp}=[A^{y+}]^x[B^{x-}]^y\\\\K_{sp}=(xS)^x\times (yS)^y$

As we can see,

$K_{sp}\propto [S]$

• Higher the value of [S] more will be solubility of compound in a solvent.Hence, more soluble it will be.
• Lower the value of [S] less will be solubility of compound in a solvent.Hence, less soluble it will be.

Hence, the correct answer is option B.