100.0 mL sample of 0.10 M NH₃ is titrated with 0.10 M HNO₃.Determine the pH of the solution before the addition of any HNO₃.The K_b of NH₃ is 1.8 × 10^-5. A) 4.74 B) 9.26 C) 11.13 D) 13.00 E) 12.55

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Quizplus · Accepted Answer

The pH of the solution before the addition of any HNO₃ is determined by the concentration of NH₃ and its Kb. Using the formula for pOH: pOH = 1/2(pKb - log[base]), and converting to pH: pH = 14 - pOH, the pH is approximately 11.13.

1000 ML Sample of 0