the acid which is used in the following preparation of carbon monoxide is 1. Con.HCl 2.dil.HCl 3.HCOOH 4.CH3COOH
Answers
Answer:
The correct answer is (3) HCOOH (Formic acid) .
Explanation:
=> Carbon monoxide is prepared by the dehydration of certain organic acids (carboxylic acids) that have one carbon atom in them.
=> Formic acid or HCOOH (Methanoic acid) is the most simple carboxylic acid containing only one carbon atom.
=> So, if a strong dehydrating agent is added to it and the mixture is heated, the molecules of water from it will be removed.
=> HCl contains no carbon atom in it, so i obviously cannot be used.
=> CH3COOH is a carboxylic acid, but it has two carbon atoms in it, so it cannot be used to make pure Carbon monoxide, as on dehydration, it will produce other products.
=> If one molecule of water is removed from HCOOH -
- HCOOH ------> CO + H-OH
=> Thus, (3)HCOOH is used in the preparation of Carbon Monoxide by dehydration -
conc. H2SO4
- HCOOH------------> H2O + CO