A buffer was prepared by adding 2.4 g of ammonium nitrate to 100.0 mL of 0.30 M ammonia (Kb = 1.8 × 10^-5). To this solution was then added 10.0 mL of 0.30 M sodium hydroxide, which caused a pH change of ________. A) 3.0 pH units B) 0.30 pH units C) 0.90 pH units D) 0.09 pH units E) zero

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Quizplus · Accepted Answer

The addition of sodium hydroxide to the buffer solution will cause a small change in pH due to the buffer's capacity to resist changes. The pH change is typically small, around 0.09 pH units, as buffers are designed to minimize pH fluctuations.

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