MDCAT Chemistry MCQ #624

Methyl magnesium bromide is reacted separately with formaldehyde and acetaldehyde. What is the difference in the classes of alcohol produced after hydrolysis?

MDCAT Chemistry MCQ #624

  1. Question 1

    Q1. Methyl magnesium bromide is reacted separately with formaldehyde and acetaldehyde. What is the difference in the classes of alcohol produced after hydrolysis?

    • A) Ethanol is produced from formaldehyde, while 2-propanol is from acetaldehyde.
    • B) Methanol is produced from formaldehyde, while ethanol is from acetaldehyde.
    • C) Propanol is produced from formaldehyde, while ethanol is from acetaldehyde.
    • D) Ethanol is produced from formaldehyde, while tert-butanol is from acetaldehyde.

    Answer: Ethanol is produced from formaldehyde, while 2-propanol is from acetaldehyde.

    Explanation: Grignard reagents react with formaldehyde to give primary alcohols, while other aldehydes give secondary alcohols and ketones give tertiary alcohols.