Asked in NUMS 2016 2016Moderate

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?

Correct answer: D. H3PO3

  • A. H3PO4
  • B. H3PO2
  • C. HPO3
  • D. H3PO3

Explanation

3 moles of OH- react with one mole of Phosphorus to form one mole of P(OH)3 or H3PO3. 3C2H5OH+PBr3→3C2H5Br + H3PO3

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