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Concept explainers
Interpretation:
An example for positional constitutional isomers pair has to be chosen from the given options.
Concept Introduction:
Organic compounds are represented shortly by the molecular formula and structural formula. Each and every compound has its own molecular formula. Compounds can have same molecular formula but not same structural formula.
Isomers are the compounds that have same molecular formula but different structural formula. The main difference lies in the way the atoms are arranged in the structure. Isomers have different chemical and physical properties even when they have same molecular formula. This is known as Isomerism.
If there is difference only in the connectivity of the atoms in the molecule, then it is known as constitutional isomerism. The isomers are known as constitutional isomers. They will have same molecular formula and same
In case of
Skeletal isomers are a type of constitutional isomers which have different carbon‑atom arrangement and have the same functional group in them.
Positional isomers are a type of constitutional isomers which have same carbon‑atom arrangement and have difference in location of functional group in them.
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Chapter 2 Solutions
Organic And Biological Chemistry
- 12. Which of the following cannot possibly be a correct IUPAC name? a. 2-methylpentane b. 2-ethylpentane Oc. 3-methylpentane O d. 3-ethylpentane O e. no correct responsearrow_forwardThe name for the alkyl group CH3—CH2—CH2— isa. propaneylb. propylc. alkylpropaned. no correct responsearrow_forward12. Which of the following cannot possibly be a correct IUPAC name? a. 2-methylpentane b. 2-ethylpentane c. 3-methylpentane d. 3-ethylpentane e. no correct responsearrow_forward
- 10. Which of the following structural formulas represents a normal alkane? CH;-CH2-CH-CH; CH CH3-CH,-CH2 CH, CH3 b. c. SH-CH, CH-CH, CH3 od. CH3-C-CH3 e. no correct responsearrow_forwardWhat is the IUPAC name for the ether whose common name is ethyl propyl ether? a. 1-ethoxypropane b.2-ethoxypropane c.1-propoxyethane d.no correct responsearrow_forward30. Which of the following is a structural isomer of 1,3-dimethylbenzene? CH3 a. CH3 b. CH3 CH3 CH; d. more than one response is correct e. no correct responsearrow_forward
- 20. Which of the following compounds consists of molecules that show geometrical (cis-trans) isomerism? a. 2-methylpropene b. 2-butene Oc. 2-methyl-2-butene Od. more than one response is correct e. no correct responsearrow_forward17. Which of the following is the most common chemical reaction done with alkanes in our society today? a. addition of hydrogen b. dehydration c. combustion d. polymerization e. no correct responsearrow_forward1. Carbohydrates often contain an aldehyde or ketone functional group and several groups Oa. -OH Ob. -COOH OC. -CH3 d. -CH2-O-CH2. Oe. no correct responsearrow_forward
- For which of the following halogenated cycloalkanes is cis-trans isomerism possible? a) 1,1-dichlorocyclobutane b) 1-bromo-1-chlorocyclobutane c) 1-bromo-2-chlorocyclobutane d) more than one correct responsearrow_forward10. Which of the following structural formulas represents a normal alkane? CH3-CH2 -CH-CH; ČH; CH;-CH,-CH, CH, CH3 ● c. CH-CH, CH--CH, CH3 d. CH-C-CH; a. b. e. no correct responsearrow_forwardMarkovnikov's rule is needed to predict the organic product in which of the following reactions? a) 1-butene + HCl b) 2-Hexene + H2 (Ni catalyst) c) 1-Pentene + H2O (H2SO4 catalyst) d) more than one correct response e) no correct responsearrow_forward
- Organic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage Learning
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