Question

an organic compound A is an essential constituent of wine and beer . oxidation of A yield an organic acid B which is present in vinegar . Name the compounds A and B and their structural formula . what happens when A and B react in presence of an acid catalyst. write chemical equation for the reaction

Answer 1

Identification of compounds A and B

• Organic compound A is given as an essential constituent of wine and beer.
• As ethanol is an essential component of wine and beer, thus compound A is identified as Ethanol.
• When ethanol is treated with potassium chromate as the catalyst, it gets oxidized into acetic acid as shown in the following equation:

$\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH} \stackrel{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} / \mathrm{H}^{+}}{\longrightarrow} \mathrm{CH}_{3} \mathrm{COOH}$

• As vinegar contains acetic acid, compound B is identified as acetic acid.
• The structural formula of compound A and B are as follows:

Compound A - Ethanol - $CH_3CH_2OH$

Compound B - Acetic acid - $CH_3COOH$

• When compound A and B react in the presence of an acid catalyst such as concentrated sulfuric acid it leads to the formation of ethyl acetate and water.
• The chemical equation involved in the reaction is as follows:

$\mathrm{CH}_{3} \mathrm{COOH}+\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH} \stackrel{\mathrm{Conc.H}_{2} \mathrm{SO}_{4}}{\longrightarrow} \mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}+\mathrm{H}_{2} \mathrm{O}$

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Answer 2

Answer:

compound A is ethanol CH3CH2OOH

compound B is acetic acid CH3OOH