CHEM 101A Lecture Notes - Lecture 6: Chemical Formula, Acid2, Isomer
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29 Sep 2016
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Two families of organic molecules that have multiple bonds. Alkenes are compounds with a carbon-carbon double bond. Formula is c subscript n h subscript 2n. Has two fewer hydrogens than acyclic alkane. Is trigonal planar with three atoms around it and bond angle of 120 degrees. Alkynes are compounds with carbon-carbon triple bonds. Two atoms around it and is linear with bond angle of 180 degrees. Properties similar to other hydrocarbons because they are non polar carbon-carbon bonds. Unsaturated hydrocarbons because they contain fewer than the maximum number of hydrogen atoms per carbon. Atoms are bonded to each other in different ways. Isomer- molecule with different compounds but the same molecular formula. Restricted rotation- groups on one side of double bond cannot rotate to the other side. When two ch3 groups are on the same side of a double bond, they are called cis isomers.
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