What is the dominant form of arsenic acid (H3A) at pH =9.23 ? Given: pKa1 = 2.24 , pKa2 = 6.96, pKa3 = 11.5 ((Note: no need for calculation) %D O H2A- and HA2- O only A3- O only H3A O only H2A- HA2- and A3- O H3A and H2A- O only HA2-

What is the dominant form of arsenic acid (H3A) at pH =9.23 ? Given: pKa1 = 2.24 , pKa2 = 6.96, pKa3 = 11.5 ((Note: no need for calculation) %D O H2A- and HA2- O only A3- O only H3A O only H2A- HA2- and A3- O H3A and H2A- O only HA2-

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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Question

What is the dominant form of arsenic acid (H3A) at pH =9.23 ? Given: pKa1
= 2.24, pKa2 = 6.96, pKa3 = 11.5 ((Note: no need for calculation)
%D
O H2A- and HA2-
O only A3-
O only H3A
O only H2A-
HA2- and A3-
O H3A and H2A-
O only HA2-

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A solution of acetic acid (CH3COOH) (pKa - 4.75) has a pH of 6.75. The ratio of acid to conjugate base is 1:10 100:1 O 1:1 O 10:1 O 1:100 Submit Answer Tries, 0/9
Hi there. Can someone help me solve this, I am extremely confused. I have tried multiple times but end up with a decimal. Thank you! Determine the Ka of acetic acid. Recall that: pKa = - log(Ka). pH=pKa= 4.99
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