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8.2 Carboxylic acids and their derivative — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry8.2 Carboxylic acids and their derivative1 Mark
MCQ
Two statements are given below:

Statement $I:$ The melting point of monocarboxylic acid with even number of carbon atoms is higher than that of with odd number of carbon atoms acid immediately below and above it in the series.

Statement $II :$ The solubility of monocarboxylic acids in water decreases with increase in molar mass.

Choose the most appropriate option

  • ✓
    Both Statement $I$ and Statement $II$ are correct.
  • B
    Both Statement $I$ and Statement $II$ are incorrect.
  • C
    Statement $I$ is correct but Statement $II$ is incorrect.
  • D
    Statement $I$ is incorrect but Statement $II$ is correct
✓

Answer

Correct option: A.
Both Statement $I$ and Statement $II$ are correct.
a
$I .$ Better packing efficiency of monocarboxylic acids with even number of carbon atoms results in higher M.P

$II.$ As molar mass increases hydrophobic part size increase hence solubility decreases.

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