isomers-polymers-answers

isomers-polymers-answers - chemical formula C 5 H 12 vs C 5...

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Isomers and polymers
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Structural Isomers 1. Pentane and 2-methylbutane are both C 5 H 12 . 2. CH 2 C CH 3 CH 3 CH 2 CH CH 2 CH 3 CH 3 CH CH CH 3 CH 2 CH 2 CH 2 CH 2 CH CH 2 CH 2 CH 3 3. C 4 H 10 has 2 isomers (2-methylpropane, butane). C 4 H 8 has more isomers because the position of the double affects the name and because ring structures can be drawn. 1-butene 2-butene 2-methylpropene cyclobutane methylcyclopropane
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Geometric Isomers 4. cis = same side, trans = opposite sides 5. 1,2-dichloroethene requires cis or trans. 1,2-dichloroethane does not require cis or trans because they would both represent the same molecule (to move chlorine from the same side to opposite sides only requires that the C – C single bond be rotated). 6. CH 3 CH 3 CH 3 CH 3 trans-1,2-dimethylcyclopentane cis-1,2-dimethylcyclopentane
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7. 1,1-dimethylcyclopentane 8. A molecule is relatively inflexible when a multiple (double or triple) bond is present or if a ring structure (including benzene) exists. 9. a) not isomers (they don’t have the same
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Unformatted text preview: chemical formula: C 5 H 12 vs. C 5 H 10 ) b) structural isomers (same as question #1) c) geometric isomers d) not isomers (both diagrams represent the exact same molecule) CH 3 CH 3 11.Monomer : the smallest repeating unit of a polymer (propene in polypropylene). Polymer : a long chain molecule made up of many small identical units (monomers). Addition polymerization : a reaction in which unsaturated monomers combine with each other to form a polymer. 12.Teflon, polypropylene, polyester, polyethylene (pop bottles, grocery bags), polystyrene (packing material), Plexiglas, polyvinyl chloride (vinyl), natural rubber, etc. Polymers Geometric Isomers Cl Cl Cl Cl C C Cl Cl H H C C Cl H H Cl cis-1,2-dichlorocyclopentane trans-1,2-dichlorocyclopentane cis-1,2-dichloroethene trans-1,2-dichloroethene For more lessons, visit www.chalkbored.com...
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This note was uploaded on 11/09/2011 for the course CHEM 110 taught by Professor Sullivan during the Fall '10 term at BYU.

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isomers-polymers-answers - chemical formula C 5 H 12 vs C 5...

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