A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq), until no further precipitation occurs. The precipitate is collected by filtration, dried, and weighed. A total of 17.07 g PbCl2(s) is obtained from 200.0 mL of the original solution.Calculate the molarity of the Pb(NO3)2(aq) solution.

Question
Asked Oct 21, 2019

A solution of NaCl(aq) is added slowly to a solution of lead nitrate, Pb(NO3)2(aq), until no further precipitation occurs. The precipitate is collected by filtration, dried, and weighed. A total of 17.07 g PbCl2(s) is obtained from 200.0 mL of the original solution.

Calculate the molarity of the Pb(NO3)2(aq) solution.

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Step 1

 Solution stoichiometry involves the calculation of concentration of solutions in the given conditions of volumes, moles etc.

Step 2

Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are used to calculate the molarity of solution. The relation between moles, volume and molarity is as given below;

Moles of solute
Molarity
volume of solution in L
Mass of solute in g
Molar mass of solute (g/mol)
Moles
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Moles of solute Molarity volume of solution in L Mass of solute in g Molar mass of solute (g/mol) Moles

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Step 3

The balance chemical reaction of Pb(NO3)2 with...

PbCl, 2 NaNO
Pb(NO,)2 NaCl
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PbCl, 2 NaNO Pb(NO,)2 NaCl

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