A Diprotic Acid H₂A Has K_a1 = 1 *10¯⁴ and K_a2

question 86

Multiple Choice

A diprotic acid H₂A has K_a1 = 1 *10¯⁴ and K_a2 = 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?

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