Question

A 75.0mL sample of 1.56×10−2M Na2SO4(aq) is added to 75.0mL of 1.22×10−2M of Ca(NO3)2(aq).

What percentage of the Ca+ remains unprecipitated?
A 75.0mL sample of 1.48×10−2M Na2SO4(aq) is added to 75.0mL of 1.28×10−2M of Ca(NO3)2(aq).

What percentage of the remains unprecipitated?
Express your answer using two significant figures.


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