First slide

Solubility product(KSP)

Question

Solubility of BaF₂ in a solution of Ba(NO₃)₂ will be represented by the concentration term

Moderate

A

[Ba⁺²]
B

[F^-]
C

$\frac{1}{2} [F^{-}]$
D

2[NO₃^-]

Solution

${BaF}_{2} (s) ⇌ \underset{S}{{BaF}_{2}} (aq) \to \underset{S + C}{{Ba}^{+ 2}} (aq) + \underset{2 S}{2 F^{-} (} aq)$
$B \underset{S}{a {({NO}_{3})}_{2}} (s) \to \underset{C + S}{{Ba}^{+ 2} (a} q) + 2 \underset{2 C}{{NO}_{3}^{-}} (aq)$
Due to common ion effect ,the solubility of BaF₂ is highly suppressed.
C>>>S OR C + S ~ C
K_sp = (S + C) x (2S)²
[F^-] = 2S
$\frac{F^{-}}{2} = S$

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