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Anonymous asked in Science & MathematicsChemistry · 1 month ago

organic chemistry ?

Is propanoic acid hydrophilic or hydrophobic and it butanone either hydrophilic or hydrophobic ?

2 Answers

  • Robbie
    Lv 5
    1 month ago

    The answer bellow is incorrect.

    Propanoic (propionic) acid is a carboxylic acid with a relatively small hydrocarbon chain. Generally the solubility of carboxylic acids and their salts is inversely related to the length of their hydrocarbon chain. Since propanoic acid has a very small hydrocarbon chain, it will be quite soluble in water. In fact, it is pretty much completely soluble above ≥ −19.3 °C.. On the other hand, decanoic acid, which has a hydrocarbon chain consisting of 10 carbons would be fairly insoluble, 0.015 g/100 mL (20 °C).  Butanone (methyl ethyl ketone) is a ketone. Because the carbonyl group interacts with water by hydrogen bonding, ketones are typically more soluble in water than the related methylene compounds. Similarly to carboxylic acids, if the ketones have larger hydrocarbon, hydrophobic groups, there solubility will decrease linearly. Since butanone is a relatively small ketone, it will be quit soluble in polar solvents such as water, 27.5 g/100 mL.

  • 1 month ago

    Propanoic acid is a fatty acid and fats are always hydrophobic, or resistant to mixing with water. Butanone is a methyl ethyl ketone, and keytones can mix with water so it is hydrophilic.

    All you had to do was look up the definitions of each term to deduce the answers.

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