The Ksp value for magnesium arsenate [Mg3(AsO4)2] is 2.00 X 10-20 so if a chemist added 1.19 x 10-2 M of Pb3(AsO4)2(aq)  which is a common ion then what would be the concentration of the Arsenate ion AsO43-(aq) in grams per Liter at equilibrium?   Question 15 options:   2.44   3.31   4.47   4.23   2.61   3.02   3.78   3.96   2.87   3.57

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