4.Refer to Table 1 below for unknown "Solid A" to answer these questions.a. What solvent should be used to recrystallize A and why?b. Cyclohexane is non-polar and methanol is polar. Is compound A polaror non-polar? Explain.Table 1 Solid ASolubility inhot solventinsolubleslightly solubleCrystals formwhen coolednovery fewmanySolventSolubility incold solventMethanolinsolubleTolueneinsolubleCyclohexaneinsolublesoluble

Less polar substances are more soluble in less polar solvents and polar substances are soluble in…

Answered: 4. Refer to Table 1 below for unknown…

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter2: Crystallization

Section: Chapter Questions

Problem 2Q

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1. Alcohols X and Y formed layers with Lucas reagent. Compound X formed brown precipitate with KMnO4 while compound Y did not. Which are the possible identities of compounds X and Y? a.tert-butanol, propanol b.isopropanol, isopentyl alcoholc. methanol, ethanold.tert-butanol, isopropanol2. Alcohols that cannot be distinguished using the Lucas test? a.isopropanol and methanol b.t-butyl alcohol and ethanol c.t-butyl alcohol and 2-methylbenzyl alcohol d.ethanol and n-propanol
Under certain conditions, molecules of acetic acid, CH3COOH, form dimers, pairs of acetic acid molecules held together by strong intermolecular attractions: Draw a dimer of acetic acid, showing how two CH3COOH molecules are held together, and stating the type of ¡MF that is responsible.
Answer no. 88-90
Match the correct structure as described. Write the letter of the correct answer. 1. Neutral - 2. Produces precipitate with calcium ions - 3. Amphipathic - 4. Becomes cloudy when added with HCl - 5. Detergent - 6. Unaffected by strong acid - 7. Turns blue litmus paper to red - 8. Insoluble in water - 9. Good emulsifying agent - 10. Turns red litmus paper to blue -
2. Suppose a solid unknown is insoluble in water. Which of the following reagents would be ueed obtaining more information about the functional group in the unknown? a. 6 M HC selution- b. 3 M NaOH solution C. Dilute NH3 solutionlds d. More than one answer is correct. Explain your answer:
the boiling point of a molecule is determined by its formula weight and the type of functional group it contains. arrange the following compounds in order of decreasing boiling points. explain your reasoning. a. CH3CH2CH3, CH3CH2CH2CH2CH2CH2CH2CH2CH2CH2CH3, CH3CH2CH2CH2CH3 b. CH3CH2CH2CH3 or \/ OH explain the following observations a. propanol is more water soluble than propane b. propanol is more water soluble than propanone
The sample that has no effect on the plane polarised light is a solution of (2S,3R)-diaminebutane (2S,3S)-diaminebutane (2R,3R)-diaminebutane An equimolar mixture of a & b a. b. C. d.
14. What factor determines which layer will be on the bottom of a separatory funnel? a. polarity b. density c. boiling point d. conductivity e. dielectric constant Your answer:
1.) Assign a polarity to the following molecules and identify appropriate polarities of recrystallizing solvent for each. OH NH,
Complete the table below with the following choices. Answer those with numbers 81 to 90. A. AldehydeB. KetoneC. Carboxylic AcidD. ThiolE. None of theseF. Solube G. Insoluble H. HighI. Low
1. Optical isomers differ in:a. sign of their optical activityb. their structurec. sign and magnitude of their optical activityd. magnitude of their optical activitye. All of the above 2. Which compound contains an asymmetric carbon?a. n-butanol d. 2-methyl-1-butanolb. Isopropyl alcohol e. None of the abovec. 1-bromo-2-methyl-1-propene 3. Which of the compounds can exist as enantiomers?A. Isopropyl chlorideB. BromochloromethaneC. Sec-butyl chlorideD. 1-chloro-2methylpentane a. A and B b. B and D c. C and D d. B and C
Enumeration SUBJECT: ANALYTIC CHEMISTRY

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