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Balance the following equation: Pb(NO 3 ) 2 (aq) + Na 3 PO 4 (aq) %u2192 Pb 3 (P

ID: 779364 • Letter: B

Question

Balance the following equation:

Pb(NO3)2(aq) + Na3PO4(aq) %u2192 Pb3(PO4)2(s) + NaNO3(aq)




Using the balanced equation, starting concentrations and the initial volumes, determine the limiting reagent for this part.

Notes for calculation purposes:


1. Assume 20 drops = 1 mL.


2. Report all answers to two significant figures.


Initial moles Pb(NO3)2 = mol


Initial moles Na3PO4 = mol


Number of moles of Pb3(PO4)2 that can be formed from each starting reagent is:


from Pb(NO3)2 = mol Pb3(PO4)2


from Na3PO4 = mol Pb3(PO4)2


Give the chemical formula for the starting solution that was the limiting reagent



Explanation / Answer

3 Pb(NO3)2(aq) + 2 Na3PO4(aq) = Pb3(PO4)2(s) + 6 NaNO3(aq)

this is the balanced chemical reaction.

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