When aqueous solutions of K2SO4 and Pb(NO3)2 are combined, PbSO4 precipitates. Calculate the mass, in grams, of the PbSO4 produced when 1.98 mL of 0.165 M Pb(NO3)2 and 3.6 mL of 0.702 M K2SO4 are mixed. Calculate the mass to 3 significant figures.

Mass of produced is 99.1 g.

Explanation:

Chemical equation for the given reaction is as follows.

Moles of = Molarity × volume

                           =

                           = 0.3267 mol

Moles of

                            = 2.527 mol

As moles of is less. Hence, it is the limiting reactant.

We know that, molar mass of is 303.26 g/mol.

Then,

  0.3267 mol of =

                        = 99.075 g

or,                    = 99.1 g

Therefore, mass of produced is 99.1 g.

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