A diprotic base (B) has pK, values of 3.33 (pKpi) and 6.66 (pK82). Which of the equalities is true when the pH is 7.34? Which of the equalities is true when the pH is 10.67? [BH *) = (BH*) O [BH; *) = [B] (BH ) = (B] [BH*] = (B] %3! O (BH *] = (BH*) O (BH? *) = [B] %3D %3! What is the predominant species of B at pH 4.40? What is the predominant species of B at pH 9.18? вн в BH? BH* BH What is the predominant species of B at pH 12.80? B BH BH

Fundamentals Of Analytical Chemistry
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ISBN:9781285640686
Author:Skoog
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Chapter16: Applications Of Neutralization Titrations
Section: Chapter Questions
Problem 16.34QAP
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A diprotic base (B) has pKg values of 3.33 (pKp1) and 6.66 (pKp2).
Which of the equalities is true when the pH is 7.34?
Which of the equalities is true when the pH is 10.67?
[BH*] = [B]
(BH? *) = [BH*)
%3D
%3D
(BH *) = [BH*]
O (BH? *1 = [B]
[BH? *] = [B]
%3D
[BH*] = [B]
%3!
!!
What is the predominant species of B at pH 4.40?
What is the predominant species of B at pH 9.18?
BH?
BH?
BH*
BH+
What is the predominant species of B at pH 12.80?
BH?
BH
Transcribed Image Text:of 13 ><> A diprotic base (B) has pKg values of 3.33 (pKp1) and 6.66 (pKp2). Which of the equalities is true when the pH is 7.34? Which of the equalities is true when the pH is 10.67? [BH*] = [B] (BH? *) = [BH*) %3D %3D (BH *) = [BH*] O (BH? *1 = [B] [BH? *] = [B] %3D [BH*] = [B] %3! !! What is the predominant species of B at pH 4.40? What is the predominant species of B at pH 9.18? BH? BH? BH* BH+ What is the predominant species of B at pH 12.80? BH? BH
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