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5. The titration curve is gencrated for one of the following diprotic acids with standard 0.100 M sodium hydroxide. Only one of the pairs will show a single equivalence point. What acid is titrated and why is only one equivalence point obscrved? A) Resorcinol: pKi 9.30; pK2 11.06 B) Leucine pK,-2.33 ; pK,-9.74 C) pK 1.82 ; pK2 6.59 D) Salicylic acid pK 2.97;pK2 13.74 E) Tartaric acid pKi3.04pK2 436 Malcic acid


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Answer #1

This pH vs Volume of NaOH graph corresponds to the titration of Salicylic acid by NaOH.

The pK2 value of Salicylic Acid is too high to be titrated by NaOH.

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