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In aqueous buffers, trifluoroacetic acid will be more polar because it will ionize to form trifluoroacetate. Acetonitrile has no acid/base chemistry and will not ionize. Since ions are very, very "polar", trifluoroacetate wins.
I guess the answer may depend on the solvent, though. Both acetonitrile and TFA are highly polar, even when not ionized. Witness their complete miscibility with water, e.g.
polarity depends on polarising groups/atoms. In trifluroacetic acid polarity is due to electronegativity and resonance which stabilises the anion. in the case of acetonitrile polarity is due to the electronegative difference between carbon and nitrogen.
What else can I help you with?
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.
Is lauric acid polar or nonpolar?
Lauric acid is a polar molecule due to its carboxylic acid group, which is hydrophilic (water-attracting), making it soluble in water to some extent. However, it also has a long hydrophobic hydrocarbon tail, which can make it more soluble in organic solvents.
What is more acidic acetic acid or formic acid or prop ionic acid?
Formic acid is more acidic because formic acid is a smaller molecule as compare to acetic acid so polarity is working in small area and O-H bond is more polar HCOOH, in acetic acid the additional CH3- group is an electrons donor group so O-H bond is little bit stronger and less polar so it is weaker acid.
Is hydrosulfuric acid polar covalent or nonpolar covalent?
Hydrosulfuric acid (H2S) is a polar covalent molecule because of the electronegativity difference between hydrogen and sulfur atoms. The sulfur atom attracts electrons more strongly, leading to an uneven distribution of charge within the molecule.
Why acetic acid is more soluble in n butanol as compared to water?
Acetic acid is more soluble in n-butanol than in water due to the similar polarities of acetic acid and n-butanol, which allows for stronger intermolecular interactions such as hydrogen bonding and dipole-dipole interactions. Water, on the other hand, is a polar solvent that interacts more strongly with other polar molecules, resulting in lower solubility of acetic acid in water.
Which is more polar acetonitrile or methnol?
Which is more polar acetonitrile or methnol?
Stronger acid trichloracetic acid or trifloracetic acid?
Trifluoroacetic acid by a bit as fluorine is more electronegative than chlorine.
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.
Among acid and ester which is more polar?
an acid is more polar than an ester
Which one is more polar naphthalene or butyric acid?
butyric acid is more polar
What is more polar methyl salicylate or salicylic acid?
salicylic acid (an acid) is more polar than methyl salicylate (an ester)
Is phenyl acetate or butyric acid more polar?
Phenyl acetate is less polar than butyric acid. This is because butyric acid has more polar functional groups present (carboxylic acid) compared to phenyl acetate (ester).
What is more polar aspirin or salicylic acid?
Salicylic acid is more polar than aspirin because it has a higher solubility in water due to the presence of a hydroxyl group that enhances its polarity. Aspirin, on the other hand, has an ester functional group, which reduces its overall polarity compared to salicylic acid.
Which is more polar cholesterol or cholesteryl acetate?
As you can see here this is the equation of acetic and stearic acid.it shows how they are different from each other. This is because acetic acid reacts much more exp[losively with water.
Why formic acid more acidic than acidic acid?
Formic acid is a smaller molecule as compare to acetic acid so polarity is working in small area and O-H bond is more polar HCOOH, in acetic acid the additional CH3- group is an electrons donor group so O-H bond is little bit stronger and less polar so it is weaker acid.
Is lauric acid polar or nonpolar?
Lauric acid is a polar molecule due to its carboxylic acid group, which is hydrophilic (water-attracting), making it soluble in water to some extent. However, it also has a long hydrophobic hydrocarbon tail, which can make it more soluble in organic solvents.
