A solid substance A is soluble in water to the extent of 10 mg/mL of water at 25 °C and 100 mg/mL of water at 100 °C. You have a sample that contains 100 mg of A and an impurity B. a. Assuming that 2 mg of B is present along with 100 mg of A, describe how you could purify A if B is completely insoluble in water. b. Assume that 2 mg of the impurity B is present along with 100 mg of A, describe how you could purify A if B had the same solubility behavior as A. Would one crystallization produce pure A?
A solid substance A is soluble in water to the extent of 10 mg/mL of water at 25 °C and 100 mg/mL of water at 100 °C. You have a sample that contains 100 mg of A and an impurity B. a. Assuming that 2 mg of B is present along with 100 mg of A, describe how you could purify A if B is completely insoluble in water. b. Assume that 2 mg of the impurity B is present along with 100 mg of A, describe how you could purify A if B had the same solubility behavior as A. Would one crystallization produce pure A?
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter10: Solutions
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Problem 73QAP: Consider three test tubes. Tube A has pure water. Tube B has an aqueous 1.0 m solution of ethanol,...
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Transcribed Image Text:A solid substance A is soluble in water to the extent of 10 mg/mL of water at 25 °C and 100
mg/mL of water at 100 °C. You have a sample that contains 100 mg of A and an impurity B.
a. Assuming that 2 mg of B is present along with 100 mg of A, describe how you could
purify A if B is completely insoluble in water.
b. Assume that 2 mg of the impurity B is present along with 100 mg of A, describe how you
could purify A if B had the same solubility behavior as A. Would one crystallization
produce pure A?
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