The Student Room Group
for (i) and (ii) check this link out

http://www.ibchem.com/IB/ibc/acids&bases/a&b_htm/18.3.htm

for (iii)

solubility product is the product of the ion concentrations after an ionic salt has dissociated

eg BaSO4 --> Ba2+ + SO4(2-)

solubility product K(sp) = [Ba2+]x[SO4(2-)]
Reply 2
charco

solubility product is the product of the ion concentrations after an ionic salt has dissociated


solubility product = maximum possible product of ionic concentrations in given solution.
ionic product = the product of given concentrations

difference important when, eg 1dm3 of 0.1mol Ag+ ions is added to 1dm3 0.01mol Cl- ions - will a ppt be formed?

(Ans: find IP by 0.05*0.005, if IP>SP then yes, white ppt forms)
corkskrew
solubility product = maximum possible product of ionic concentrations in given solution.
ionic product = the product of given concentrations

difference important when, eg 1dm3 of 0.1mol Ag+ ions is added to 1dm3 0.01mol Cl- ions - will a ppt be formed?

(Ans: find IP by 0.05*0.005, if IP>SP then yes, white ppt forms)



you're quite correct - I missed the end part "in a saturated solution" when defining the solubility product

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