Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Textbook Question
Chapter 5.7, Problem 17P
Which of the following have a meso form? (Recall that the -ol suffix refers to an alcohol, ROH.)
(a) 2, 3-Butanediol
(b) 2, 3-Pentanediol
(c) 2, 4-Pentanediol
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Q1. Do the following conversions as directed. Write the complete reaction equation.
(a) Benzaldehyde to Benzoic Acid.
(b) Propanal to 1-propanal
(c) Cyclohexanone to Cyclohexanol
(d) Acetaldehyde to Ethyl alcohol
(e) Acetone to Iso-propyl alcohol
4
But-2-enal, CH₂CH=CHCHO, is a pale yellow, flammable liquid with an irritating odour.
(a) But-2-enal exists as two stereoisomers.
Draw skeletal formulae to show the structure of the two stereoisomers of but-2-enal.
(b) (i) Describe a simple chemical test that would show that but-2-enal is an aldehyde.
(ii) Explain why this test gives a different result with aldehydes than it does with keton
(c) But-2-enal also reacts with sodium borohydride, NaBH4.
(i) Identify the organic compound formed in this reaction.
(ii) State the type of chemical reaction occurring.
(d) Precautions must be taken to prevent but-2-enal catching fire.
Construct a balanced equation for the complete combustion of but-2-enal, C₂HO.
17)
Which of the following compounds does not have the molecular formula
C6H140?
(a) 1-hexanol
(b) 2-hexanol
(c) 3-methyl-2-pentanol
(d) 3-methyl-3-pentanol
(e) Cyclohexanol
Chapter 5 Solutions
Organic Chemistry
Ch. 5.2 - Prob. 1PCh. 5.2 - Prob. 2PCh. 5.2 - Prob. 3PCh. 5.2 - Prob. 4PCh. 5.3 - Is cocaine (Worked Example 5-2) dextrorotatory or...Ch. 5.3 - Prob. 6PCh. 5.5 - Prob. 7PCh. 5.5 - Prob. 8PCh. 5.5 - Prob. 9PCh. 5.5 - Assign R or S configuration to the chirality...
Ch. 5.5 - Draw a tetrahedral representation of...Ch. 5.5 - Prob. 12PCh. 5.6 - One of the following molecules (a)–(d) is...Ch. 5.6 - Prob. 14PCh. 5.6 - Assign R or S configuration to each chirality...Ch. 5.7 - Prob. 16PCh. 5.7 - Which of the following have a meso form? (Recall...Ch. 5.7 - Does the following structure represent a meso...Ch. 5.8 - Prob. 19PCh. 5.8 - Prob. 20PCh. 5.9 - Prob. 21PCh. 5.11 - Prob. 22PCh. 5.11 - Prob. 23PCh. 5.11 - The lactic acid that builds up in tired muscles is...Ch. 5.11 - The aconitase-catalyzed addition of water to...Ch. 5.SE - Which of the following structures are identical?...Ch. 5.SE - Prob. 27VCCh. 5.SE - Prob. 28VCCh. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Prob. 30VCCh. 5.SE - Prob. 31APCh. 5.SE - Which of the following compounds are chiral? Draw...Ch. 5.SE - Prob. 33APCh. 5.SE - Eight alcohols have the formula C5H12O. Draw them....Ch. 5.SE - Draw compounds that fit the following...Ch. 5.SE - Prob. 36APCh. 5.SE - Prob. 37APCh. 5.SE - Prob. 38APCh. 5.SE - What is the stereochemical configuration of the...Ch. 5.SE - Prob. 40APCh. 5.SE - Prob. 41APCh. 5.SE - Prob. 42APCh. 5.SE - Prob. 43APCh. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Prob. 46APCh. 5.SE - Assign R or S configuration to each chirality...Ch. 5.SE - Assign R or S configurations to the chirality...Ch. 5.SE - Assign R or S stereochemistry to the chirality...Ch. 5.SE - Prob. 50APCh. 5.SE - Draw examples of the following: (a) A meso...Ch. 5.SE - Prob. 52APCh. 5.SE - Prob. 53APCh. 5.SE - Prob. 54APCh. 5.SE - On reaction with hydrogen gas by a platinum...Ch. 5.SE - Prob. 56APCh. 5.SE - Prob. 57APCh. 5.SE - One of the steps in fat metabolism is the...Ch. 5.SE - The dehydration of citrate to yield cis-aconitate,...Ch. 5.SE - The first step in the metabolism of glycerol,...Ch. 5.SE - One of the steps in fatty-acid biosynthesis is the...Ch. 5.SE - Prob. 62APCh. 5.SE - Draw tetrahedral representations of the two...Ch. 5.SE - The naturally occurring form of the amino acid...Ch. 5.SE - Prob. 65APCh. 5.SE - Prob. 66APCh. 5.SE - Prob. 67APCh. 5.SE - Allenes are compounds with adjacent carbon-carbon...Ch. 5.SE - Prob. 69APCh. 5.SE - Prob. 70APCh. 5.SE - How many stereoisomers of...Ch. 5.SE - Draw both cis- and trans-1,4-dimethylcyclohexane...Ch. 5.SE - Draw both cis- and trans-1,3-dimethylcyclohexane...Ch. 5.SE - cis-1,2-Dimethylcyclohexane is optically inactive...Ch. 5.SE - Prob. 75APCh. 5.SE - Prob. 76APCh. 5.SE - Prob. 77AP
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- 6. Describe concisely a chemical test to distinguish between the following pairs of compounds. (a) n-pentanol and 3-methylpentan-3-ol (b) Ethanal dan pentanal (c) Phenol and benzoic acidarrow_forward4. Which of the following has a higher boiling point? Explain your answer:(a) 2-propanol or 2-butanol(b) Dimethyl ether or ethanolarrow_forwardShow the chemical reaction on how to convert cyclopentene into these compounds. (a) 1,2-dimethylcyclopropane (b) Cyclopentanol (c) Iodocyclopentane (d) Cyclopentane.arrow_forward
- Compounds that contain an N-H group associate by hydrogen bonding. (a) Do you expect this association to be stronger or weaker than that of compounds containing an O-H group? (b) Based on your answer to part (a), which would you predict to have the higher boiling point, 1-butanol or 1-butanamine?arrow_forwardDraw structures to correspond with the following common and systematic names:(a) phenyl formate (b) cyclohexyl benzoatearrow_forwardDraw structural formulas for these ketones. (a) Ethyl isopropyl ketone (b) 2-Chlorocyclohexanone (c) 2,4-Dimethyl-3-pentanone (d) Diisopropyl ketone (e) Acetone (f) 2,5-Dimethylcyclohexanonearrow_forward
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