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ong will have a higher K value. bases will have a higher percent ionization [OH ] equilib B initial Percent ionization = Strong bases, for which Kp is very large, ion (100%). For weak bases, the percent innizat

ong will have a higher K value. bases will have a higher percent ionization [OH ] equilib B initial Percent ionization = Strong bases, for which Kp is very large, ion (100%). For weak bases, the percent innizat

Chemistry
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, Kp. For the generic weak base, B B(aq) + H20(1) = BH+(aq) + OH (aq) this constant is given by [BH ][OH ] B] Kb Strong bases will have a higher K, value. Similarly, strong bases will have a higher percent ionization value. [OH ] equilibrium B initial x 100% Percent ionization 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.
Transcribed Image Text:The degree to which a weak base dissociates is given by the base-ionization constant, Kp. For the generic weak base, B B(aq) + H20(1) = BH+(aq) + OH (aq) this constant is given by [BH ][OH ] B] Kb Strong bases will have a higher K, value. Similarly, strong bases will have a higher percent ionization value. [OH ] equilibrium B initial x 100% Percent ionization 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.
Ammonia, NH3, is a weak base with a K, 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 = 11.45 Submit Previous Answers Correct Part B What is the percent ionization of ammonia at this concentration? Express your answer with the appropriate units. > View Available Hint(s) µA 圈] % ionization = Value Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Provide Feedback
Transcribed Image Text:Ammonia, NH3, is a weak base with a K, 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 = 11.45 Submit Previous Answers Correct Part B What is the percent ionization of ammonia at this concentration? Express your answer with the appropriate units. > View Available Hint(s) µA 圈] % ionization = Value Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Provide Feedback
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