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Posted by on Wednesday, December 15, 2010 at 11:36am.

15.0 mL of 0.30 M sodium phosphate solution reacts with 20.0 mL of 0.22 M lead(II) nitrate solution. What is the concentration of phosphate ions left in solution after the reaction is complete?
A) 0.0 M
B) 0.045 M
C) 0.13 M
D) 0.060 M
E) 0.12 M

  • chem - , Wednesday, December 15, 2010 at 12:43pm

    Write and balance the equation.
    moles Na3PO4 = M x L
    moles Pb(NO3)2 = M x L
    Determine which reagent is in excess, from that you go to the ppt formed and from that the amounts of reagents not reacted.
    Post your work if you get stuck.

  • chem - , Monday, May 25, 2015 at 9:43pm


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