Verified Solution • 2025–26 Session moderate

QJEEM19Ch3cde: JEE Main 2019 Chemistry - Class 12 JEEM19Ch3cde Solution: In the following reaction Rate of the reaction is the highest…

In the following reaction JEE Main 2019 (Online) 9th April Evening Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 179 English Rate of the reaction is the highest for :

Multiple Choice Options

  • A Propanal as substrate and methanol in stoichiometric amount.
  • B Acetone as substrate and methanol in stoichiometric amount
  • C Propanal as substrate and methanol in excess
  • D Acetone as substrate and methanol in excess

Step-by-Step Verified Solution

Steric hindrance of aldehydes is less compares to the ketone that is why aldehydes are more reactive than ketones in nucleophilic addition reactions.

So among propanal and acetone, propanal is suitable as substance.

And to form acetal, excess amount of alcohol is required so here methanol in excess is required.

Related Learning Resources & Exam Preparation