A chemistry graduate student is given 450. mL of a 1.20M ammonia (NH,) solution. Ammonia is a weak base with K, = 1.8 x 10. What mass of NH¸Br should the student dissolve in the NH, solution to turn it into a buffer with pH =9.56? You may assume that the volume of the solution doesn't change when the NH, Br 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 1.20M ammonia (NH,) solution. Ammonia is a weak base with K, = 1.8 x 10. What mass of NH¸Br should the student dissolve in the NH, solution to turn it into a buffer with pH =9.56? You may assume that the volume of the solution doesn't change when the NH, Br is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 61QRT

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