Question

Solubility of $Ba{F}_2$ in a solution $Ba(N{O}_3{)}_2$ will be represents by the concentration term

• A. $\left[B{a}^{++}\right]$
• B. $\left[F^{-}\right]$
• C. $\frac{1}{2}\left[F^{-}\right]$
• D. $2\left[N{O}_3^{-}\right]$

Answer 1

The correct option is A $\left[B{a}^{++}\right]$

$\text{Let S is the solubility of}Ba{F}_2\text{in a solution of}BaN{O}_3,$

Then,

$K_{SP}=\left[B{a}^{2+}\right][F^{-}{]}^2,$

then,$[F-]=2S,$

so,

$S=\frac{1}{2}\left[F^{-}\right]$

thus , the correct answer is C.