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The ionization of water by ammonia is shown below. NH3 (aq) + H2O (l) ⇔ NH4+ (aq) + OH- (aq) Kc = 1.78 ×10^-5 at 25°C. Calculate the concentration of OH-(aq) in a 0.1 M ammonia solution at equilibrium. A) 1.78 × 10^-6 M B) 0.100 M C) 1.33 ×10^-5 M D) 1.33 ×10^-3 M E) 6.65 ×10^-4 M