9:23LTEKirkland - FirlochEditToday 9:07 PMO LIVEYou make a Buffer using a Weak acid (HA) with a pKa of 7.95and its Conjugate Base Salt (NaA). You mix 0.100 moles ofNaA into 1.00L of a 0.500 M HA solution (with no change involume). Calculate the pH of this buffer to 2 decimal places.7.25erng th 9:23LTEKirkland - FirlochEditToday 9:07 PMO LIVEYou now test the Buffer made in the previous question with6M HCI and 6M NaOH.You add 5-drop portions of each solution to 100-mL of theBuffer. It will take more drops ofHCIto change the pH by 2 unitssince the Buffer has more moles of the weakAcid form (HA) than the Base

pH = pKa + log{[A-]/[HA]} = 7.95 + log(0.100/0.500) = 7.95 - 0.698 = 7.25

You make a Buffer using a Weak acid (HA) with a pKa of 7.95 and its Conjugate Base Salt (NaA). You mix 0.100 moles of NaA into 1.00L of a 0.500 M HA solution (with no change in volume). Calculate the pH of this buffer to 2 decimal places.

You make a Buffer using a Weak acid (HA) with a pKa of 7.95 and its Conjugate Base Salt (NaA). You mix 0.100 moles of NaA into 1.00L of a 0.500 M HA solution (with no change in volume). Calculate the pH of this buffer to 2 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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