tuliskan persamaan hasil kali kelarutan ( Ksp) dan harga Ksp nya, bila kelarutan garam berikut dapat dinyatakan dalam s molL^-1! a.Ag2CO3 b.ba3(po4)2 c.al2(co3)

Kelarutan & Hasilkali Kelarutan
Kimia XI

[a]

Ag₂CO₃ ⇄ 2 Ag⁺ + CO₃²⁻
      s             2s        s

Ksp = [Ag²⁺]² [CO²⁻]

Ksp = [ 2s ]² [ s ]

Ksp = 4s³

s = ∛ [Ksp/4] mol/liter

[b]

Ba₃(PO₄)₂ ⇄ 3 Ba²⁺ + 2 PO₄³⁻
       s                3s          2s

Ksp = [Ba²⁺]³ [PO₄³⁻]²

Ksp = [ 3s ]³ [ 2s ]²

Ksp = 108s⁵

[tex]s = \sqrt[5]{ \frac{Ksp}{108} } mol/liter[/tex]

[c]

Al₂(CO₃)₃ ⇄ 2 Al³⁺ + 3 CO₃²⁻
      s               2s          3s

Ksp = [Al³⁺]² [CO₃²⁻]³

Ksp = [ 2s ]² [ 3s ]³

Ksp = 108s⁵

[tex]s = \sqrt[5]{ \frac{Ksp}{108} } mol/liter[/tex]