The binding of Mg2+ to glycolate anion, (HO-CH2-COO-) proceeds by this equilibrium: Mg2+ + HO-CH2-COO- ->Mg2+(HO-CH2-COO-) a) Write the expression for Keq for this reversible reaction. b) If you begin with 5 mM Mg2+ and 0.1 mM HO-CH2-COO-, and with a value of Keq = 103 M-1, calculate the concentrations of Mg2+ , HO-CH2-COO-, and Mg2+(HO-CH2-COO-) at equilibrium.

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