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April 18, 2014

Homework Help: chemistry

Posted by Tanner on Sunday, March 25, 2012 at 3:40pm.

The solubility products of AgBr and Ag3PO4 are 5.0 10-13 and 1.8 10-18, respectively. If Ag+ is added (without changing the volume) to 1.00 L of a solution containing 0.31 mol Br ‾ and 0.31 mol PO43-, calculate the molarity of Ag+ ions required to initiate precipitation and to bring the precipitation to 99.99% completion for each anion.

(a) [Ag+] at which AgBr precipitation begins
(b) [Ag+] at which AgBr precipitation is 99.99% complete
(c) [Ag+] at which Ag3PO4 precipitation begins
(d) [Ag+] at which Ag3PO4 precipitation is 99.99% complete
e) Give the [Ag+] range in which a complete separation by precipitation can be achieved.
Low End
High End

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