A 0.10 M NH₃ solution is 1.3% ionized. Calculate the H⁺ ion concentration. NH₃ + H₂O $\rarr$ NH₄⁺ + OH^- A)1.3 * 10^-3 M B)7.7 * 10^-2 M C)7.7 * 10^-12 M D)0.13 M E)0.10 M

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Quizplus · Accepted Answer

The ionization of NH₃ produces OH⁻ ions, not H⁺ ions. The concentration of OH⁻ is 0.0013 M (1.3% of 0.10 M). Using the water ion product (Kw = 1.0 x 10⁻¹⁴), the H⁺ concentration is Kw / [OH⁻] = 1.0 x 10⁻¹⁴ / 0.0013 = 7.7 x 10⁻¹² M.

A 010 M NH3 Solution Is 1 →\rarr→ NH4+ + OH- A)1

A 010 M NH₃ Solution Is 1 $\rarr$ NH₄⁺ + OH^-
A)1