Term
| Most physical properties of alkenes are similar to those of the corresponding __________. |
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Definition
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Term
| Like alkanes, alkenes have __________ around 0.6 or 0.7g/cm^3. |
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Definition
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Term
The __________ __________ of alkenes increase smoothly with molecular weight.
As with alkanes, increased branching leads to greater __________ and lower __________ __________. |
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Definition
1) Boiling points
2) Volatility
3) Boiling points |
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Term
| Like alkanes, alkenes are relatively __________ and are insoluble in __________ but soluble in __________ solvents such as hexane, gasoline, halogenated solvents, and ethers |
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Definition
1) Nonpolar
2) Water
3) Nonpolar |
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Term
Alkenes tend to be slightly more __________ than alkanes for two reasons:
1. The more weakly held electrons in the __________ bond are more __________ (contributing to instantaneous dipole moments) and,
2. The vinylic bonds tend to by slightly __________ (contributing to a permanent dipole moment) |
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Definition
1) Polar
2) Pi
3) Polarizable
4) Polar |
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Term
Alkyl groups are slightly __________-donating toward a double bond, helping to stabilize it.
This donation slightly polarizes the __________ bond, with a small partial __________ charge on the alkyl group and a small __________ charge on the double-bond carbon atom. |
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Definition
1) Electron
2) Pi
3) Positive
4) Negative |
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Term
In a __________-disubstituted alkene, the vector sum of the two dipole moments is directed __________ to the double bond.
In a __________-disubstituted alkene, the two dipole moments tend to __________.
If an alkene is symmetrically __________ disubstituted, the dipole moment is zero. |
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Definition
1) Cis
2) Perpendicular
3) Trans
4) Cancel
5) Trans |
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Term
| Compounds with permanent dipole moments engage in __________-__________ attractions, while those without permanent dipole moments engage only in__________ __________ __________ attractions. |
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Definition
1) Dipole-dipole
2) van der Waals |
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Term
| The __________ alkene isomer tends to have a larger dipole moment then the __________, increasing __________ __________. |
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Definition
1) Cis
2) Trans
3) Boiling point |
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