JEE · NEET Previous Year Question
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:
Topic: JEE PYQ
Answer: A. Full step-by-step solution below.
- ABoth Statement I and Statement II are correct.
- BBoth Statement I and Statement II are incorrect.
- CStatement I is correct but Statement II is incorrect.
- DStatement I is incorrect but Statement II is correct.
Correct answer: A
Solution
(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.
More Carboxylic Acids & Derivatives PYQs
- Consider the reaction : RCHO + NH2NH2 → RCH = N–NH2 What sort of reaction is it ?
- Which of the following reactions will not form acetaldehyde ?
- The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon, is :
- Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecularmass. It is due to th…
- The correct order of acidic strength among the followings is