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Why does solubility decrease with increase in molecular mass?

Why does solubility decrease with increase in molecular mass?

For, example, the hydrogen molecule has a molar mass of 2 grams. So, an increase in size means an increase in molar mass. So, for a given amount of solvent, it is difficult to house more large sized particles. As a result, the solubility will decrease , increasing the molar mass.

What factor that could decrease the solubility of carboxylic acid in water?

What factor can decrease the solubility of carboxylic acid in water? The increase in length of the hydrocarbon chain.

What happens to the solubility of carboxylic acid as their size increases?

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The carboxylic acids with up to four carbon atoms will mix with water in any proportion. The solubility of the bigger acids decreases very rapidly with size. This is because the longer hydrocarbon “tails” of the molecules get between water molecules and break hydrogen bonds.

What can you conclude about the solubility of carboxylic acids in water relative to their molecular weight?

Solubility. The solubility of carboxylic acids in water is similar to that of alcohols, aldehydes, and ketones. Acids with fewer than about five carbons dissolve in water; those with a higher molecular weight are insoluble owing to the larger hydrocarbon portion, which is hydrophobic.

Does solubility increase with molecular mass?

Generally, higher molar mass compounds will be less soluble than lower molar mass molecules of the same type .

Why does solubility decrease down the homologous series?

The alcohol, -OH, group is polar and able to form hydrogen bonds with water molecules. However, as the relative molecular mass increases, ascending the homologous series, the hydrophobic hydrocarbon chain begins to hinder the solubility process.

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Why does the solubility of carboxylic acids decrease?

Carboxylic acids exhibit strong hydrogen bonding between molecules. The acids with one to four carbon atoms are completely miscible with water. Solubility decreases as the carbon chain length increases because dipole forces become less important and dispersion forces become more predominant.

Why carboxylic acid is soluble in water?

Carboxylic acids are soluble in water. Carboxylic acids are polar and due to the presence of the hydroxyl in the carboxyl group, they are able to form hydrogen bonds with water molecules.

Why does solubility of carboxylic acids decrease?

What happens when carboxylic acid dissolve in water?

The carboxylic acids have the typical properties of acids. For example, they: dissolve in water to form acidic solutions with pH values less than 7. react with carbonates to form a salt, water and carbon dioxide.

What happens when carboxylic acids dissolve in water?

How does molecular weight affect solubility in water?

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Molecular size The larger the molecules of the solute are, the larger is their molecular weight and their size. It is more difficult it is for solvent molecules to surround bigger molecules. If all of the above mentioned factors ale excluded, a general rule can be found that larger particles are generally less soluble.

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