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Q: Why acetonitrile with so big dipole moment has so low polarity comparing to methanol or water and how to combine then the polarity and dielectric constant with dipole moment?
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What compound is more polar and soluble in water methane or methanol and why?

Acetonitrile is slightly more polar than methanol. This is due to the presence of the C-N triple bond in acetonitrile (CH3CN).


Which is more polar methanol or acetonitrile and why?

Acetonitrile is a more polar molecule than methanol because of the triple bond and lone pair on the nitrogen (N) atom in acetonitrile. This makes that end of the molecule highly electronegative, even more so than an oxygen (O) atom containing two lone pairs in methanol.


Solubility of azithromycin?

rapidly soluble in methanol , Acetonitrile and partially soluble water .


Is methanol toxic?

Acetonitrile is unlikely to be more toxic than methanol, as the latter is extremely toxic. Acetonitrile, also known as methyl cyanide, is quite unlike the poison "cyanide", because the poison is a salt of hydrocyanic acid and has free cyanide ions in solution. Acetonitrile has no free cyanide ions. The breakdown products of acetonitrile / methyl cyanide will be acetic acid and ammonia, which will form harmless ammonium acetate. In the short term, however, acetonitrile like any other organic solvent will have narcotic effects, causing dizziness and drowsiness, and the solvent could kill in large enough amounts.


Why is acetonitrile more polar Why not methanol.O is more electro-ve. my guess is that nitrogen is in the end in the molecule whereas in methanol oxygen has hydrogen on one hand and carbon on another?

In Acetonitrile carbon (EN-value on Pauling's scale is 2.5) of cyanide is attached with Nitrogen(EN-value on Pauling's scale is 3.0), so , Nitrogen atom with combination of carbon, that is more EN than Hydrogen(EN-value on Pauling's scale is 2.1) attached with oxygen atom (EN-value on Pauling's scale is 3.5) in methanol, becomes more Electron withdrawing effect than -OH group in methanol. In this way -CN is more dispersive than that of -OH.


What is freezing point constant of methanol?

The freezing point of methanol depends on its concentration in water.For example for 10% methanol by mass in water, the freezing point is -7 degree centigrade. For 100% methanol by mass, the freezing point is -98 degree centigrade.Refer to link below for more details.


What is methanol's shape?

methanol is liquid


What compounds are found in methanol?

Methanol is an alcohol and consists of carbon,hydrogen and oxygen its formula is CH3OH


Is methanol a solid?

No, at room temperature methanol is a liquid.


How does methanol react with water?

Methanol does not react with water.


Density of methanol?

The density of methanol is .7918g/cm3


Is methanol a acid or base?

The methanol is a base not a acid