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    hi, im doin as chem right now..but i hav dis xam for which i need to know some A2 stuff..can someone help wid da followin..
    1)calculating [H+] and ph?
    2)what are acid and base dissociation constants?
    3)what is a solubility product

    any help is greatly appreciated
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    for (i) and (ii) check this link out

    http://www.ibchem.com/IB/ibc/acids&b...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-)]
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    (Original post by 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)
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    (Original post by 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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