Using water as a solvent, Shiele extracted cyclopentanol, acetone, and propionaldehyde from a mixture using simple distillation. He added A, B, C, and water in equal amounts to a distilling flask. Here are the structures and boiling points of the mixture's constituents. Assume the boiling point of water is 100 degrees Celsius. Structure Name Boiling Point (C) A 161.8 OH B 59.5 C 63 1. Arrange the compounds from the first distilled to the last distilled. 2. During simple distillation, which compounds are most likely to distill together?

Using water as a solvent, Shiele extracted cyclopentanol, acetone, and propionaldehyde from a mixture using simple distillation. He added A, B, C, and water in equal amounts to a distilling flask. Here are the structures and boiling points of the mixture's constituents. Assume the boiling point of water is 100 degrees Celsius. Structure Name Boiling Point (C) A 161.8 OH B 59.5 C 63 1. Arrange the compounds from the first distilled to the last distilled. 2. During simple distillation, which compounds are most likely to distill together?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter9: Liquids, Solids, And Materials

Section: Chapter Questions

Problem 104QRT: Consider this information regarding two compounds. Thallium azide: yellow crystalline solid; melting...

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Consider this information regarding two compounds. Thallium azide: yellow crystalline solid; melting point = 330 C; slightly soluble in water, more soluble in hot water; insoluble in ethanol or diethyl ether. Camphene: colorless, cubic crystals; melting point = 51 C; boiling point = 159 C; insoluble in water; moderately soluble in ethanol; soluble in diethyl ether. (a) Is camphene an ionic or molecular compound? Explain your answer. (b) Is thallium azide an ionic or molecular compound? Explain your answer.
Acrylonitrile and ethyl acetate have the same boiling point: 77.20C. Which statement explains the outcome you would expect if a mixture of these two substances were distilled? * The acrylonitrile would vaporize first and the ethyl acetate would be left behinc O The ethyl acetate would vaporize first and the acrylonitrile would be left behind Both substances would vaporize at the same time so distillation would not be h Ethyl acetate is a solid so distillation would involve allowing the acrylonitrile to evaporate. Which statement best explains why structural formulas are good for depicting polymers?
How many grams of ethylene glycol (C2H6O2) must be added to 1000. g water to create anautomobile radiator coolant mixture that will not freeze at – 15⁰C?
16) 1-butanethiol, one of the compounds giving skunks their distinctive odor, freezes at -115.7°C and boils at 98.5°C. At a temperature of 200 K, in what phase (solid, liquid, or gas) would you expect the 1- butanethiol to be? Explain your answer.
Aspirin has a higher molar mass compared to salicylic acid, however aspirin melts at a lower temperature than salicylic acid. Provide a brief explanation for this observation. Table 1 Compound: Formula: Salicylic Acid C;H6O3 Aspirin C9H3O4 Molar Mass: 138.12 Melting point: Ka 158-160°C 1.08 x 10³ 180.15 140-142°C 2.72 x 10$ pKa Solubility (g/100ML) 2.99 4.57 0.18 0.25
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12. Normal boiling point of ethanol (C2H5OH) is 78 °C, and of propanol (C3H;OH) is 97 °C. a. Explain the reason for the difference in boiling points of these two alcohols. b. When the underline methyl group in propanol, CH3CH2CH2OH, is replaced with a hydroxyl group (HOCH2CH2OH), boiling point of the molecule increases to 197 °C. Explain the reason for observed increase in the boiling point.
You have samples of four compounds: dimethyl ether,methane, difluoromethane, and ethanol. You measurethe boiling points of the compounds as -128 °C, -52 °C,-25 °C, and 78 °C, but then lose the labels for each sample.Make the following predictions: (a) Which compoundboils at -128 °C? (b) Which boils at -52 °C? (c) Whichboils at -25 °C? (d) Which boils at 78 °C?
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