The molar solubility of magnesium chloride in water is 0.23 M.
What is the numerical value for Ksp for MgCl2?
Suppose you wanted to reduce the concentration of dissolved Mg2+ to 0.00537 M by adding NaCl. What concentration of NaCl would you need?

asked by Lily
  1. MgCl2 ==> Mg^2+ + 2Cl^-
    Substitute those number into the Ksp expression and solve for Ksp.

    part 2.
    Then Ksp = (Mg^2)(Cl^-)^2
    Plug in 0.00537 for Mg^2+ and solve for Cl^-.

    posted by DrBob222

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