Tuliskan hubungan kelarutan dengan tetapan hasil kali kelarutan senyawa berikut : a. AgCrO₄ b. Mg(OH)₂ c. PbCrO₄ d. Ca₃(Po₄)₂
chitraadindakir
A. AgCrO4----> Ag^2+ + CrO4^2- s s s s = kelarutan, Ksp= hasil kali kelarutan Ksp AgCrO4 = [Ag^2+] [CrO4^2-] = s.s = s² b. Mg(OH)2-----> Mg^2+ + 2OH- s s 2s Ksp Mg(OH)2 = s . (2s)² = 4s³ c. PbCrO4---> Pb^2+ + CrO4^2- s s s Ksp = S² d. Ca3(PO4)2------> 3Ca^2+ + 2PO4^3- s 3s 2s Ksp = (3s)³ (2s)² = 27 . 4. S^5 =108 S^5
s s s
s = kelarutan, Ksp= hasil kali kelarutan
Ksp AgCrO4 = [Ag^2+] [CrO4^2-]
= s.s
= s²
b. Mg(OH)2-----> Mg^2+ + 2OH-
s s 2s
Ksp Mg(OH)2 = s . (2s)²
= 4s³
c. PbCrO4---> Pb^2+ + CrO4^2-
s s s
Ksp = S²
d. Ca3(PO4)2------> 3Ca^2+ + 2PO4^3-
s 3s 2s
Ksp = (3s)³ (2s)²
= 27 . 4. S^5
=108 S^5