14. 0 points) For the following, consider Mg(OH 2(s) dissolved in 1.00 M NH4Cl(a

Question

14. 0 points) For the following, consider Mg(OH 2(s) dissolved in 1.00 M NH4Cl(aq). Mg(OH)20s) 2+ (aq) 2 OH-(aq) Ksp 1.8 X 10-11 Mg NH3(aq) H2O() NH 4+ (aq) OH (aq) 1.8 X 10 a. What is the numerical value of the equilibrium constant for the neutralization that occurs when the Mg(OH is added to the solution? b. Find the equilibrium concentrations for the equilibrium of part (a) in terms ofx, the change in initial concentrations. Plug these values into the equilibrium constant expression of part (a), and rearrange the terms to make a cubic expression in the form of ar bx cx 0. c. The cubic equation of part (b) has 2 imaginary roots and one real root. ammonium chloride solution in g/L.

Explanation / Answer

Keq = Kb x Ksp = 1.8x10-11 x 1.8x10-5 = 3.24x10-16

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