Writing Solubility Product Expressions
for Slightly Soluble Ionic Compounds
Solutions:
(a) Silver bromide: AgBr(s) Ag+(aq) + Br -(aq)
Ksp = [Ag+] [Br -]
(b) Strontium phosphate: Sr3(PO4)(s) 3 Sr2+(aq) + 2 PO43-(aq)
Ksp = [Sr2+]3[PO43-]2
(c) Aluminum carbonate: Al2(CO3)3 (s) 2 Al3+(aq) + 3 CO32-(aq)
Ksp = [Al3+]2[CO32-]3
(d) Nickel(III) sulfide:
Ni2S3 (s) + 3 H2O(l) 2 Ni3+(aq) + 3 HS -(aq) + 3 OH-(aq)
Ksp =[Ni3+]2[HS-]3[OH-]3
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