it is the 3rd most polar organic compound.
the order goes(from most polar to least): Amide, Acid, Alcohol, Keytone-Aldehyde, Amine, Ester, Ether, and Alkane
2007-04-24 19:15:56
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answer #1
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answered by Donuts 2
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Lets take water. H2O. If the atoms were in a straight line, the charges would be balanced with oxygen in the middle. The atoms are not in a straight line, however. There is an angle of 104 degrees. This makes the water molecule look like a V. Oxygen attracts electrons much more than hydrogen, so the oxygen atom ends up negatively charged. The hydrogens end up positively charged. The oxygen makes the point of the V negative, and the two hydrogens make it's arms positive. The water molecule has a positive side and a negative side. This makes it a polar molecule. Normal Hexane is a straight chain of carbon, each carbon carbon bond a single bond, and two hydrogen atoms on each of the inner carbons, and three hydrogens on each of the end carbons. The charges are evenly distributed. It is non-polar. there is no strong negative or positive area on this hexane molecule. Soap works because it is part polar, and part non polar. The polar part attaches to water molecules, and the non-polar to the grease (oil) which is similar to the hexane we just discussed. It is a hybrid, and allows polar water to dissolve non- polar grease. The rule in general is like dissolves like. Polar dissolves polar, and non-polar dissolves non- polar. In more complicated molecules, look for areas where there is a lack of symmetry. Different atoms attract electrons differently, some more (electronegative) and some less (electropositive). If there is a lack of symmetry, if one part doesn't mirror another, then there will be areas of different charge, and the molecule will be more or less polar. It is best to see a three dimensional model of a molecule, to determine it's symmetry, or lack of symmetry. Fluorine has the greatest attraction for electrons. Each atom has a certain rating on a scale of electronegativity-electropositivity. Imbalance of this, over a molecule, will make it polar. Even and symmetrical distribution of atoms over the molecule will make it non-polar. I tried to simplify it. Please write and tell me if this helps.
2016-05-18 01:45:47
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answer #2
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answered by ? 3
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alcohols are polar. however they can dissolve non-polar organic compounds. the longer the carbon chain, the more readily they dissolve non-polar compounds. the smaller the carbon chain, the easier it is to dissolve polar compounds.
also alcohols do dissociate in water. they typically have pkas in the range of 16-20 making them slightly less acidic than water. they are also, of course, basic. one simple topic in organic chemistry is the dehydration of an alcohol to form an alkene. this is done by protonation of the basic hydroxyl oxygen of the alcohol to create a weak base/good leaving group-> water. if the alcohol is primary or secondary, a base can remove a hydrogen from the carbon beta to the hydroxyl group, allowing the electrons to shift from a sp3 orbital and form a pi bond by sharing electron density with the empty pi orbital of the alpha carbon, forming a double bond.
2007-04-24 19:33:50
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answer #3
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answered by gordonliu 2
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It is polar. The -OH group is polar, just like in water, with the O slightly negative and the H slightly positive. If I remember correctly, this gives the C a slightly positive charge as well.
This is why alcohol mixes with water. If it were non-polar they would not mix.
2007-04-24 19:17:26
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answer #4
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answered by jellybeanchick 7
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Alcohal is polar in the nature.
Functional Group Name: Alcohal
Boiling Point: 117 degree celcious
Name: propanol
ALCOHOL: These compounds are third in the polarity because of hydrogen bonding capabilities and the presence of only one oxygen vs. the two in the acid functional group.
2007-04-24 19:23:31
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answer #5
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answered by Anonymous
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Alcohol is Polar.
OH group makes it polar.
2007-04-24 19:16:29
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answer #6
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answered by African 3
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Absolutely non polar.
It has no dissociation when dissolved in water and DOES NOT form ions.
Another example of non polar substances are acetone, ethyl ether, isopropylic alcohol, glycerine etc, which are orgenic compounds (just as alcohol is)
So, it has NO polarity...
2007-04-24 19:11:21
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answer #7
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answered by Sehr_Klug 50 6
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it's polar because of the hydroxyl group
2007-04-24 19:06:47
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answer #8
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answered by zanekevin13 4
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