0.2143 grams of an unknown organic acid was dissolved in about 50 mL of water in a 250 mL Erlenmeyer flask and titrated against 0.1000 M NAOH solution using bromothymol blue indicator. 30.60 mL of titrant was used to achieve end point. The melting point range of the unknown is 98-102 °C. Ignition test reveals the compound to be aliphatic. Cerric ammonium nitrate test is also positive. Which of the following is the unknown? Hint: Consult Shriner's table.

0.2143 grams of an unknown organic acid was dissolved in about 50 mL of water in a 250 mL Erlenmeyer flask and titrated against 0.1000 M NAOH solution using bromothymol blue indicator. 30.60 mL of titrant was used to achieve end point. The melting point range of the unknown is 98-102 °C. Ignition test reveals the compound to be aliphatic. Cerric ammonium nitrate test is also positive. Which of the following is the unknown? Hint: Consult Shriner's table.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

0.2143 grams of an unknown organic acid was dissolved in about 50 mL of water in a
250 mL Erlenmeyer flask and titrated against 0.1000 M NAOH solution using
bromothymol blue indicator. 30.60 mL of titrant was used to achieve end point. The
melting point range of the unknown is 98-102 °C. Ignition test reveals the
compound to be aliphatic. Cerric ammonium nitrate test is also positive. Which of
the following is the unknown?
Hint: Consult Shriner's table.
citric acid monohydrate
[3-carboxy-3-hydroxypenatnedioic acid monohydrate]
Phenoxyethanoic acid
Glutaric acid
[pentanedioic acid]
OOxalic acid dihydrate
[ethanedioic acid dihaydrate]
O citric acid (anhydrous)
[3-carboxy-3-hydroxypenatnedioic acid]

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