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- Name and draw a structural formula for the major product of each alkene addition reaction. o OK (a) CH₂CH=CH₂ + HI →→→→ (b) CH, + HIThe foul odor of rancid butter is caused by butyric acid, CH3CH2CH2CO2H.(a) Draw the Lewis structure and determine the oxidation number and hybridization for each carbon atom in the molecule.(b) The esters formed from butyric acid are pleasant-smelling compounds found in fruits and used in perfumes. Draw the Lewis structure for the ester formed from the reaction of butyric acid with 2-propanol.1. (a) Draw the structures of the eight isomeric pentyl alcohols, C3H11OH. (b) Name each by the IUPAC system and by the carbinol system. (c) Label each as primary, secondary, or tertiary, (d) Which one is isopentyl alcohol? tert-Pentyl alcohol? (e) Give the structure of a primary, a secondary, and a tertiary alcohol of the formula C,H13OH.
- Classify each of the following reactions as an addition, elimination, substitution, or rearrangement. (a) CH3B + KOH → CH3OH + KBr (b) CH3CH2Br — Н2С—СH2 + HBr (c) H2C=CH2 + H2 → CH3CH3Write a condensed structural formula, such as CH3CH3, and describe the molecular geometry at each carbon atom.(a) propene(b) 1-butanol(c) ethyl propyl ether(d) cis-4-bromo-2-heptene(e) 2,2,3-trimethylhexane(f) formaldehydeWrite a condensed structural formula, such as CH3CH3, and describe the molecular geometry at each carbon atom.(a) 2-propanol(b) acetone(c) dimethyl ether(d) acetic acid(e) 3-methyl-1-hexene
- 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.(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 bromideAnswer 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.
- Write an equation to show the proton transfer between each alkene or cycloalkene and HCl. Where two carbocations are possible, show each. (a) CH,CH,CH=CHCH, (b) 2-Pentene CyclohexeneDraw a structural formula of an alkene that undergoes acid-catalyzed hydration to give each alcohol as the major product (more than one alkene may give each alcohol as the major product). (a) 3-Hexanol (b) 1-Methylcyclobutanol (c) 2-Methyl-2-butanol (d) 2-PropanolIndicate 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.