ANSWER:
Data:
The dissociation of PbSO4 in water has the following equation
the Ksp for this reaction is:
and the solubility quotient is:
To determine if the PbSO4 will precipitate when both solutions (Pb(NO3)2 and Na2SO4) are mixed, we need to find the concentration of Pb+2 and SO4-2:
according to this, 1 mol of Pb(NO3)2 produces 1 mol of Pb+2, then
the concentration of Pb+2 when both solutions are mixed is:
according to this, 1 mol of Na2SO4 produces 1 mol of SO4-2, then
the concentration of SO4-2 when both solutions are mixed is:
Now, we can determine the solubility quotient:
In this case, the solubility quotient (Q = 8.45x10-9) is smaller than Ksp (1.6x10-8). As Q is smaller than Ksp, the PbSO4 mill not precipitate when the solutions of Na2SO4 and Pb(NO3)2 are mixed
Solubility product constant Ksp is also important to predict whether the precipitation will occur under the...
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