# Chemistry

What volume of 0.150 M Na_3PO_4 is required to precipitate all the lead(II) ions from 120.0 mL of 0.350 M Pb(NO_3)_2?

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1. 2Na3PO4 + 3Pb(NO3)2 ==> Pb3(PO4)2 + 6NaNO3

Just follow the steps in this example of a stoichiometry problem.
http://www.jiskha.com/science/chemistry/stoichiometry.html

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