LiAlH4 converts Acetaldehyde into ___________?
Correct answer: C. Ethyl alcohol
- A. Acetic acid
- B. Methane
- C. Ethyl alcohol
- D. Methyl alcohol
Explanation
LiAlH4 reduces an aldehyde to a primary alcohol, so acetaldehyde, CH3CHO, becomes ethanol, CH3CH2OH, also called ethyl alcohol. The aldehyde carbonyl group is converted to a -CH2OH group without removing a carbon atom. The likely mistake is methyl alcohol, which would incorrectly reduce the two-carbon compound to a one-carbon product.
Last updated
About Alcohols
Alcohols contain a hydroxyl group attached to a saturated carbon atom and are classified as primary, secondary or tertiary. Their nomenclature, hydrogen bonding, acidity, oxidation, dehydration, reaction with sodium and conversion to haloalkanes are covered, along with the distinction between alcohols and phenols, where the hydroxyl group is attached directly to an aromatic ring.
Practise Alcohols and Phenols
535 free Alcohols and Phenols MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
3 Moles of ethanol reacts with 1 mole of PBr3 to form 3 moles of bromoethane and 1 mole of X. Which of the following is X?
95% ethanol is called_________________?
A biochemical process in which large molecules are broken down into smaller molecules in the presence of enzymes secreted by microorganism is called?
A tertiary alcohol is not readily oxidised because the carbon carrying the hydroxyl group
Absolute alcohol is obtained when rectified spirit is treated with__________________?