- What is the dominant form of aspartic acid (a triprotic acid (H3A+)) at a pH of 50 (pKa1 = 1.990, pKa2 = 3.900, pKa3 = 10.002)? %3D %3D D H3A+ and H2A are equal НЗА+ O H2A O H2A and HA- are equal nts a buffer

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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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ration curve for the tir
O 4.5
5- What is the dominant form of aspartic acid (a triprotic acid (H3A+)) at a pH of
2.50 (pKa1 = 1.990, pKa2 = 3.900, pKa3 = 10.002)?
%3D
%3D
H3A+ and H2A are equal
O H3A+
O H2A
H2A and HA- are equal
ntc a buffer
Transcribed Image Text:ration curve for the tir O 4.5 5- What is the dominant form of aspartic acid (a triprotic acid (H3A+)) at a pH of 2.50 (pKa1 = 1.990, pKa2 = 3.900, pKa3 = 10.002)? %3D %3D H3A+ and H2A are equal O H3A+ O H2A H2A and HA- are equal ntc a buffer
O 7
Clear selection
4- Why do successive Ka's decrease for all polyprotic acids such as with H3A
1- Because in the order of acidity (species that can give easily protons H +): H3A>
H2A- > HA2- > A3-
2- Because in the order of pKa: H3A> H2A - > HA 2- > A 3-
O 3- Because In the order of pKa: H3A< H2A - <HA 2- <A 3-
4- Because in the order of pKb: H3A> H2A - > HA 2- > A 3-
O 5- Choices 1, 3 and 4 are correct
hown below describes
Transcribed Image Text:O 7 Clear selection 4- Why do successive Ka's decrease for all polyprotic acids such as with H3A 1- Because in the order of acidity (species that can give easily protons H +): H3A> H2A- > HA2- > A3- 2- Because in the order of pKa: H3A> H2A - > HA 2- > A 3- O 3- Because In the order of pKa: H3A< H2A - <HA 2- <A 3- 4- Because in the order of pKb: H3A> H2A - > HA 2- > A 3- O 5- Choices 1, 3 and 4 are correct hown below describes
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