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A Diprotic Acid H2A Has Ka1 = 1 × 10-4

Question 42

Multiple Choice

A diprotic acid H2A has Ka1 = 1 × 10-4 and Ka2 = 1 × 10-8. The corresponding base A2- is titrated with aqueous HCl, both solutions being 0.1 mol L-1. Which one of the following diagrams best represents the titration curve which will be seen? A diprotic acid H<sub>2</sub>A has K<sub>a1</sub> = 1 × 10<sup>-4</sup> and K<sub>a2</sub> = 1 × 10<sup>-8</sup>. The corresponding base A<sup>2-</sup> is titrated with aqueous HCl, both solutions being 0.1 mol L<sup>-1</sup>. Which one of the following diagrams best represents the titration curve which will be seen? A) A B) B C) C D) D E) E


A) A
B) B
C) C
D) D
E) E

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