Concept explainers
(a)
Interpretation: Whether the statement that the benzene does not undergo addition reactions as that of
Concept introduction: Benzene is a cyclic compound with continuous delocalizing electron cloud in the structure referred to as resonance.
(b)
Interpretation: Whether the statement that the defining feature of aromatic compound is that they do not show addition reactions being highly unsaturated should be stated true or false.
Concept introduction: Benzene is a cyclicaromatic compound with continuous delocalizing electron cloud in the structure referred to as resonance.
(c)
Interpretation: Whether the statement that nitration reaction of benzene is referred as addition of
Concept introduction: Nitration refers to the process of adding a nitrate group to a compound.
(d)
Interpretation: Whether the statement that halogenation in alkene is said to be an addition reaction whereas in arene is said to be a substitution reaction should be stated as true or false.
Concept introduction: Halogen is the process of attaching the halogen element such as
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Introduction To General, Organic, And Biochemistry
- TRUE OR FALSE (a) A functional group is a group of atoms in an organic molecule that undergoes a predictable set of chemical reactions. (b) The functional group of an alcohol, an aldehyde, and a ketone have in common the fact that each contains a single oxygen atom. (c) A primary alcohol has one —OH group, a secondary alcohol has two —OH groups, and a tertiary alcohol has three —OH groups. (d) There are two alcohols with the molecular formula C3H8O. (e) There are three amines with the molecular formula C3H9N. (f) Aldehydes, ketones, carboxylic acids, and esters all contain a carbonyl group. (g) A compound with the molecular formula of C3H6O may be either an aldehyde, a ketone, or a carboxylic acid. (h) Bond angles about the carbonyl carbon of an aldehyde, a ketone, a carboxylic acid, and an ester are all approximately 109.5°. (i) The molecular formula of the smallest aldehyde is C3H6O, and that of the smallest ketone is also C3H6O. (j) The molecular formula of the smallest carboxylic…arrow_forwardWhat structural features help us identify a compound as(a) an alkane, (b) a cycloalkane, (c) an alkene, (d) an alkyne,(e) a saturated hydrocarbon, (f) an aromatic hydrocarbon?arrow_forwardAnswer true or false. (a) Alkenes and alkynes are nonpolar molecules. (b) The physical properties of alkenes are similar to those of alkanes of the same carbon skeletons. (c) Alkenes that are liquid at room temperature are insoluble in water and when added to water, will float on water.arrow_forward
- A certain hydrocarbon has a molecular formula of C5H8. Which of the following is not a structural possibility for this hydrocarbon? (a) It is a cycloalkane. (b) It contains one ring and one double bond. (c) It contains two double bonds and no rings. (d) It is an alkyne.arrow_forward5.Write the structural formula of the ester that, when hydrolyzed, would yield the following:(a) methanol and propanoic acid(b) 1-octanol and acetic acid (c) ethanol and butanoic acidarrow_forwardGive the structural formulae and name the functional groups of the following compounds. (a) 3-chlorobut-1-ene Name the functional group: (b) butanedioic acid Name the functional group: (c) propanamide Name the functional group: (d) 3-methylbutanal Name the functional group:arrow_forward
- Give the molecular formula of a hydrocarbon containingsix carbon atoms that is (a) a cyclic alkane, (b) a cyclicalkene, (c) a linear alkyne, (d) an aromatic hydrocarbon.arrow_forwardIndicate whether each statement is true or false. (a) Pentanehas a higher molar mass than hexane. (b) The longer the linearalkyl chain for straight-chain hydrocarbons, the higherthe boiling point. (c) The local geometry around the alkynegroup is linear. (d) Propane has two structural isomers.arrow_forward5. Give the structural formulae and name the functional groups of the following compounds. (a) 3-chlorobut-1-ene (b) butanedioic acid Name the functional group: (c) propanamide Name the functional group: (d) 3-methylbutanal Name the functional group: Name the functional group:arrow_forward
- TRUE OR FALSE (a) Both ethylene and acetylene are planar molecules. (b) An alkene in which each carbon of the double bond has two different groups bonded to it will show cis-trans isomerism. (c) Cis-trans isomers have the same molecular formula but a different connectivity of their atoms. (d) Cis-2-butene and trans -2-butene can be interconverted by rotation about the carbon–carbon double bond. (e) Cis-trans isomerism is possible only among appropriately substituted alkenes. (f) Both 2-hexene and 3-hexene can exist as pairs of cis-trans isomers. (g) Cyclohexene can exist as a pair of cis-trans isomers. (h) 1-Chloropropene can exist as a pair of cis-trans isomers.arrow_forward(a) Alkenes are relatively stable compounds but are more reactive than alkanes and serve as a feedstock for the petrochemical industry because they can participate in a wide variety of reactions. Predict the products obtained from following reaction. Write the chemical reaction and name the products according to IUPAC system. (i) the reaction of 3-ethyl-3-methyl-1-pentene with hydrogen bromide (ii) the reaction of 3-ethyl-2-pentene with hydrogen bromidearrow_forward(a) Is C4H6 a saturated or unsaturated hydrocarbon?(b) Are all alkynes unsaturated?arrow_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning