Refer to the procedure in Part A of Limiting Reagent Experiment in your lab manu

ID: 1000735 • Letter: R

Question

Refer to the procedure in Part A of Limiting Reagent Experiment in your lab manual.

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.

3. If exponents are entered they should be in the form of 2.0E-2.

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

Balanced reaction is

3 Pb(NO3)2(aq) + 2 Na3PO4(aq) ? 1 Pb3(PO4)2(s) + 6 NaNO3(aq).

Initial moles Pb(NO3)2: 3 mol

Initial moles Na3PO4: 2 mol

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

from Pb(NO3)2 = 1/3 mol Pb3(PO4)2

from Na3PO4 = 1/2 mol Pb3(PO4)2

Na3PO4 is the limiting reagent.

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