2 2 of 15I Review | Constants | Periodic TableVisualizing buffersYou can visualize a buffer solution containing approximately equal concentrations of HA and A in action using the following equation, where Kais the equilibrium constant:[H3O ][A][HA]K.[H;O*][HA]K.[A]When the concentrations of HA and A are relatively large, the addition of a small amount of acid or base changes their concentration negligibly.The result is that the ratio (HA]/[A maintains a value approximately equal to 1, and the (H30+] is approximately equal to the Ka value underbuffer conditions.Part ACalculate the pH of the solution made by adding 0.50 mol of HOBR and 0.30 mol of KOBR to 1.00 L of water. The value of K, for HOBR is2.0 x 10-9Express your answer numerically using two decimal places.• View Available Hint(s)pH =Submit Solutions that contain a weak acid, HA, and its conjugatebase, Adrastic changes in pH. When a solution contains a weakacid and its conjugate base or a weak base and itsconjugate acid, it will be a buffer solution. For bufferscontaining a weak acid, the principal reaction isare called buffer solutions because they resistHA(aq) + H20(1)= H30*(aq) + A (aq)Unbuffered, a weak acid would ionize and the net reactionwould proceed forward to reach equilibrium. However, whena significant amount of conjugate base is already present,the extent of the net reaction forward is diminished. Thus,equilibrium concentrations of HA and A areapproximately equal to their initial concentrations.

Here i have solved the question

Part A Calculate the pH of the solution made by adding 0.50 mol of HOBR and 0.30 mol of KOB to 1.00 L of water. The value of K for HOBR is 2.0 x 10-9. Express your answer numerically using two decimal places.

Part A Calculate the pH of the solution made by adding 0.50 mol of HOBR and 0.30 mol of KOB to 1.00 L of water. The value of K for HOBR is 2.0 x 10-9. Express your answer numerically using two decimal places.

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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