Question

An organic compound A is widely used as a preservative in pickles and has a molecular formula C2 H4 O2 this compound reacts with ethanol to form a sweet smelling compound B.
(a) Identify the compound A.
(b) write the chemical equation for its reaction with ethanol to form compound B.
(c) how can we get compound A back from B?​

Answer 1

Explanation:

COMPOUND A IS ETHANOIC ACID

CH3COOH + C2H5OH ----ACID------> CH3COOC2H5 + H20

(B)

COMPOUND B IS ETHYL ETHANOATE

WE CAN GET COMLOUND A FROM COMPOUND B BY OXIDATION REACTION

C2H5OH ---------ACIDIFIEDK2Cr2o7----------> CH3COOH

WE CAN GET ETHANOL BACK BY SAPONIFICATION

CH3COOC2H5 + NaOH --------> CH3COONA +C2H50H

Answer 2

a) VINEGAR OR ACETIC ACID

b). CH3COOH + CH3CH2OH → CH3-C=O-OH2-CH3+ H20. COMPOUND B IS ESTER.

c) BY THE PROCESS OF HYDROLYSIS OF ESTER IN THE PRESENCE OF ALKALI LIKE NaOH OR KOH.