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A chemistry graduate student is given 450. mL of a 1.40 M nitrous acid (HNO, solution. Nitrous acid is a weak acid with K =4.5 x 10 What mass of KNO, should the student dissolve in the HNO, solution to turn it into a buffer with pH = 3.73? You may assume that the volume of the solution doesn't change when the KNO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.

A chemistry graduate student is given 450. mL of a 1.40 M nitrous acid (HNO, solution. Nitrous acid is a weak acid with K =4.5 x 10 What mass of KNO, should the student dissolve in the HNO, solution to turn it into a buffer with pH = 3.73? You may assume that the volume of the solution doesn't change when the KNO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter15: Complex Ion And Precipitation Equilibria
Section: Chapter Questions
Problem 14QAP: A buffer solution is prepared by adding 5.50 g of ammonium chloride and 0.0188 mol of ammonia to...
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A chemistry graduate student is given 450. mL of a 1.40M nitrous acid (HNO,) solution. Nitrous acid is a weak acid with K = 4.5 x 10 What mass of KNO, should the student dissolve in the HNO, solution to turn it into a buffer with pH = 3.73? You may assume that the volume of the solution doesn't change when the KNO., is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
Transcribed Image Text:A chemistry graduate student is given 450. mL of a 1.40M nitrous acid (HNO,) solution. Nitrous acid is a weak acid with K = 4.5 x 10 What mass of KNO, should the student dissolve in the HNO, solution to turn it into a buffer with pH = 3.73? You may assume that the volume of the solution doesn't change when the KNO., is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.
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