Question

Question ⤵

How would you distinguish experimentally between an alcohol and a crboxylix acid ?

Ans correctly and take points..​

Answer 1

Answer:

We can distinguish between an alcohol and a carboxylic acid:

1. Litmus test

Take 2 ml of alcohol and carboxylic acid in a test tube, Put 1 drop of blue litmus in each test tube, the liquid which shows no effect is alcohol whereas the liquid which turns red is a carboxylic acid

Answer 2

Answer:

Question ⤵

How would you distinguish experimentally between an alcohol and a carboxylic acid ?

Amswer ⤵

All the carboxylic acids decompose sodium hydrogencarbonate giving brisk effervescence of carbon dioxide gas whereas ethanol does not react with sodium hydrogencarbonate .

Experiment :

(i) Take two test tubes, label them as A and B.

(ii) Take about 0.5 g of sodium hydrogencarbonate (NahCO3) in each test tube .

(iii) Add 2 mL of ethanol in test tube A and 2 mL of ethanoic acid in test tube B.

(iv) We can observe the gas bubbles in test tube B. No such bubbles are seen in test tube A. Pass the gas produced in test tubes B through lime water taken in another test tube.

(v) We will find that lime water turns milky. It is a test for carbon dioxidem

Hence, this experiment proves that when ethanoic acid reacts with sodium hydrogencarbonate then carbon dioxide gas is produced with an effervescence ( a rapid evolution of gas bubbles). Ethanol does not react with NaHCO3.

More Information ⬇

Alcohols :- The hydroxyl group attached to a carbon atom is known as alcohol group.

General formula of the homologous series of alcohols is CnH2n+1---OH .

Carboxylic acid :- The carbon compounds containing carboxylic acid group, called carboxylic acid .

General formula of the homologous series of carboxylic acids is R---COOH.

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