The salt ZnOH2 is involved in the following two equilibria-ZnOH2s - Zn2-aq-2OH-aq- Ksp-1-3 - 10-17ZnOH2s -2OH-aq - -ZnOH4-2-aq- Kc-0-13Calculate the pH of the solution at which solubility is minimum-

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Solubility Product

The salt ZnOH...

Question

The salt $Z n (O H)_{2}$ is involved in the following two equilibria:
$Z n (O H)_{2} (s) ⇌ Z n^{2 +} (a q) + 2 O H^{-} (a q); K_{s p} = 1.3 \times 10^{- 17}$
$Z n (O H)_{2} (s) + 2 O H^{-} (a q) ⇌ [Z n (O H)_{4}]^{2 -} (a q); K_{c} = 0.13$
Calculate the pH of the solution at which solubility is minimum.

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Z n {(O H)}_{2}

Z n {(O H)}_{2} (s) ⇌ {Z n}^{2 +} (a q) + 2 {O H}^{-} (a q)

K_{s p} = 1.2 \times 10^{- 17}

Z n {(O H)}_{2} (s) + 2 {O H}^{-} (a q) ⇌ {[Z n ({O H)}_{4}]}^{2 -} (a q)

K_{c} = 0.12

p H

Z n (O H)_{2}

A l (O H)_{3}

A l (O H)_{3} (s) ⇌ A l^{3 +} (a q) + 3 O H^{-} (a q); K_{s p}

A l (O H)_{3} (s) + O H (a q) ⇌ A l (O H)_{4}^{-} (a q); K_{c}

Z n (s) + 2 H^{+} (a q) ⟶ Z n^{2 +} (a q) + H_{2} (g)

2 [F e (C N)_{6}]^{3 -} (a q) + 2 O H^{-} (a q) + H_{2} O_{2} (a q) \to 2 [F e (C N)_{6}]^{4 -} (a q) + 2 H_{2} O (l)

2 [F e (C N)_{6}]^{3 -} (a q) + 2 O H^{-} (a q) + H_{2} O_{2} (a q) \to 2 [F e (C N)_{6}]^{4 -} (a q) + O_{2} (g) + 2 H_{2} O (l)

A l (O H)_{3}

A l (O H)_{3} (s) ⇌ A l^{3 +} (a q .) + 3 O H^{-} (a q .); K_{s p}

A l (O H)_{3} (s) + O H^{-} (a q) ⇌ A l (O H)_{4}^{-} (a q .); K_{c}

A l (O H)_{3}

A l (O H)_{3} (s) ⇌ A l^{3 +} (a q .) + 3 O H^{-} (a q .); K_{s p}

A l (O H)_{3} (s) + O H^{-} (a q) ⇌ A l (O H)_{4}^{-} (a q .); K_{c}

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