Home
Class 10
CHEMISTRY
How would you distinguish experimentally...

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

Text Solution

Verified by Experts

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 0.5g of sodium hydrogencarbonate `(NaHCO_(3))` 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 tube B through lime water taken in another test tube.
(v) We will find that lime water turns milky. It is a test for carbon dioxide.
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 `NaHCO_(3)`.
Promotional Banner

Topper's Solved these Questions

  • CARBON AND ITS COMPOUNDS

    VK GLOBAL PUBLICATION|Exercise NCERT Exercises|15 Videos

  • CARBON AND ITS COMPOUNDS

    VK GLOBAL PUBLICATION|Exercise VERY SHORT ANSWER QUESTIONS|33 Videos

  • ACIDS, BASES AND SALTS

    VK GLOBAL PUBLICATION|Exercise PROFICIENCY EXERCISE ( Long Answer Questions (5 mark))|4 Videos

  • CHEMICAL REACTIONS AND EQUATIONS

    VK GLOBAL PUBLICATION|Exercise PROFICIENCY EXERCISE (LONG ANSWER QUESTIONS)|2 Videos

Similar Questions

Explore conceptually related problems

(a) What would be oberved on adding a 5% alkaline potassium permanganate solution drop by drop to some warm thanol in a test tube? Wrote the name of the compound formed during the chemical reation Also write chemical equation of the reaction which takes place. (b) How would you distinguish experimentally between an alcholhol and a carboxylic acid on the basis of a chemical property?

How would you distinguish experimentally between ethanol ad ethanoic acid with the help o sodium hydrogen carbonate? Write chemical equation for the reaction involved.

(a) Wrtie the functional groups present in an aldehyde and a carboxylic acid. (b) How would you distinguish between an alcohal and a carboxylic acid ? © what happens when ethanoic acid is warmed with ethanol in the presence of a few drops of concentrated sulphuric acid ? write equation of the reaction involved. (d) What happens when a piece of sodium metal is added to ethanol ? write equation of the reaction involved. (e) Describe how ethene can be prepared from ethanol ? Give an equation of the reaction and state the condittions.

How would you distinguish between an alcohol and acetic acid ?

List two tests for experimentally distinguishing between an alcohol and a carboxylic acid and describe how these tests are performed .

The reaction between an alcohol and carboxylic acid is known as :