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13 Dec 2019

A chemistry major prepared a 15.75 mL buffer solution, into which he added 7.50 mL of a 1.275 M, potassium hydroxide solution. The pH of the buffer changed by 2.57 units. Calculate the buffer capacity of that buffer.â

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Titration of Buffer Solutions A buffer solution is prepared by placing 5.86 grams of sodium nitrite and 32.6 mL of a 4.90 M nitrous acid solution into a 500.0 mL volumetric flask and diluting to the calibration mark. If 11.47 mL of a 3.03 M solution of potassium hydroxide is added to the buffer, what is the final pH? The Ka for nitrous acid = 4.6 X 10-4. pH =

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A) A buffer solution contains 0.378 M ammonium bromide and 0.411 M ammonia.

If 0.0359 moles of hydroiodic acid are added to 150 ml of this buffer, what is the pH of the resulting solution ?
(Assume that the volume does not change upon adding hydroiodic acid)

pH =

B) A buffer solution contains 0.500 M ammonium bromide and 0.397 M ammonia.

If 0.0235 moles of potassium hydroxide are added to 125 ml of this buffer, what is the pH of the resulting solution ?
(Assume that the volume does not change upon adding potassium hydroxide)

pH =

PART 1: A buffer solution contains 0.431 M KH₂PO₄ and 0.289M K₂HPO₄.

If 0.0304 moles of sodium hydroxide are added to 125mL of this buffer, what is the pH of the resulting solution ?
(Assume that the volume does not change upon adding sodium hydroxide)

pH =

PART 2:A buffer solution contains 0.431 M ammoniumbromide and 0.342 M ammonia.

If 0.0288 moles of potassium hydroxide are added to 125 mL of this buffer, what is the pH of the resulting solution ?
(Assume that the volume change does not change upon adding potassium hydroxide)

pH =

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A chemistry major prepared a 15.75 mL buffer solution, into which he added 7.50 mL of a 1.275 M, potassium hydroxide solution. The pH of the buffer changed by 2.57 units. Calculate the buffer capacity of that buffer.â

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A chemistry major prepared a 15.75 mL buffer solution, into which he added 7.50 mL of a 1.275 M, potassium hydroxide solution. The pH of the buffer changed by 2.57 units. Calculate the buffer capacity of that buffer.â

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A chemistry major prepared a 15.75 mL buffer solution, into which he added 7.50 mL of a 1.275 M, potassium hydroxide solution. The pH of the buffer changed by 2.57 units. Calculate the buffer capacity of that buffer.â