Part A What is the pH of a 0.440 M ammonia solution?

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The degree to which a weak base dissociates is given by the
base-ionization constant, Kb. For the generic weak base, B
B(aq) + H20(1) = BH*(aq) + OH (aq)
this constant is given by
[BH*][OH]
B]
K =
Strong bases will have a higher K, value. Similarly, strong
bases will have a higher percent ionization value.
Percent ionization
[OH ] equilibrium
x 100%
B initial
Strong bases, for which Kp is very large, ionize completely
(100%). For weak bases, the percent ionization changes
with concentration. The more dilute the solution, the greater
the percent ionization.
EX
Transcribed Image Text:The degree to which a weak base dissociates is given by the base-ionization constant, Kb. For the generic weak base, B B(aq) + H20(1) = BH*(aq) + OH (aq) this constant is given by [BH*][OH] B] K = Strong bases will have a higher K, value. Similarly, strong bases will have a higher percent ionization value. Percent ionization [OH ] equilibrium x 100% B initial Strong bases, for which Kp is very large, ionize completely (100%). For weak bases, the percent ionization changes with concentration. The more dilute the solution, the greater the percent ionization. EX
Ammonia, NH3, is a weak base with a Kp value of 1.8 x 10-5.
Part A
What is the pH of a 0.440 M ammonia solution?
Express your answer numerically to two decimal places.
» View Available Hint(s)
pH =
Submit
Part B
What is the percent ionization of ammonia at this concentration?
Express your answer with the appropriate units.
> View Available Hint(s)
HẢ
% ionization =
Value
Units
Submit
Provide Feedback
Transcribed Image Text:Ammonia, NH3, is a weak base with a Kp value of 1.8 x 10-5. Part A What is the pH of a 0.440 M ammonia solution? Express your answer numerically to two decimal places. » View Available Hint(s) pH = Submit Part B What is the percent ionization of ammonia at this concentration? Express your answer with the appropriate units. > View Available Hint(s) HẢ % ionization = Value Units Submit Provide Feedback
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