An unkown solid acid is either citric acid or tartaric acid. To determine which acid you have, you titrate a sample of the solid with NaOH. The appropriate reactions are as follows:Citric acid:H3C6H5O7 (aq) + 3 NaOH (aq) --> 3 H2O (l) + Na3C6H5O7 (aq) Tartaric acid:H2C4H4O6 (aq) + 2 NaOH (aq) --> 2 H2O (l) + Na2C4H4O6 (aq) A 0.956 g sample requires 29.1 ml of 0.513 M NaOH for titration to the equivalence point. What is the unknown acid?

Answered: An unkown solid acid is either citric…

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter15: Solutions Of Acids And Bases

Section: Chapter Questions

Problem 15.135QE

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An unkown solid acid is either citric acid or tartaric acid. To determine which acid you have, you titrate a sample of the solid with NaOH. The appropriate reactions are as follows:

Citric acid:

H₃C₆H₅O₇ (aq) + 3 NaOH (aq) --> 3 H₂O (l) + Na₃C₆H₅O₇ (aq)

Tartaric acid:

H₂C₄H₄O₆ (aq) + 2 NaOH (aq) --> 2 H₂O (l) + Na₂C₄H₄O₆(aq)

A 0.956 g sample requires 29.1 ml of 0.513 M NaOH for titration to the equivalence point. What is the unknown acid?

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