Lecture 10- Chirality

Lecture 10- Chirality - Lecture 10 Physical Properties of...

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Unformatted text preview: Lecture 10 Physical Properties of Alkanes Finish Chapter 2!!! Begin Chapter 3: Chirality Last Time: • Cyclohexanes – groups prefer to be equatorial, less steric strain • Stereoisomers – cis,trans isomerism in cycloalkanes V. Patman 2 Thurs 2.17.11 V. Patman 2 Properties of Alkanes • Intermolecular forces: 4 types V. Patman 3 Thurs 2.17.11 Physical Properties - Trends • Increase MW, increase bp • Branching? V. Patman 4 N a m e D e n s it y ( g /m L ) h e x a n e 2 - m e t h y lp e n t a n e 3 - m e t h y lp e n t a n e 2 ,3 - d im e t h y lb u t a n e 2 ,2 - d im e t h y lb u t a n e 6 8 .7 6 0 .3 6 3 .3 5 8 .0 4 9 .7- 9 5- 1 5 4- 1 1 8- 1 2 9- 9 8 0 .6 5 9 0 .6 5 3 0 .6 6 4 0 .6 6 1 0 .6 4 9 b p ( ° C ) m p ( ° C ) Thurs 2.17.11 Oxidation of Alkanes • Oxidation is the basis for the use of alkanes as energy sources for heat and power. – heat of combustion: heat of combustion: The heat released when one mole of a substance in its standard state is oxidized to carbon dioxide and water.in its standard state is oxidized to carbon dioxide and water....
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Lecture 10- Chirality - Lecture 10 Physical Properties of...

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