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प्रश्न
An organic compound X of molecular formula C2H4O2 gives brisk effervescence with sodium hydrogen carbonate. Give the name and formula of X.
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उत्तर
The organic compound 'X' with molecular formula C2H4O2 is ethanoic acid. Formula of X (ethanoic acid) is CH3COOH.
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संबंधित प्रश्न
The molecular formula of acetic acid is _________ .
(a) CH3COOH
(b) CH3 – CH3
(c) C6H6
(d) C2H4
List two uses of esters.
Identify the term or substance based on the descriptions given below
Ice like crystals formed on cooling an organic acid sufficiently.
Write the IUPAC names, common names and formulae of the first two members of the homologous series of carboxylic acids.
Write the formulae of ethanoic acid.
Fill in the following blank with suitable word:
The next higher homologue of ethanol is ...............
Name one chemical compound which can be used to distinguish between ethanol and ethanoic acid.
What type to compound is CH3COOH?
State any two uses of esters.
What do you notice when acetic acid reacts with litmus?
Acetic acid is a typical acid. Write one equation in case of its reactions with a carbonate.
If you take a pinch of sodium hydrogen carbonate powder in a test-tube and add drop-by-drop acetic acid to it, what would you observe immediately? List any two main observations.
While studying saponification reactions, the following comments were noted down by the students :
(I) Soap is a salt of fatty acids.
(II) The reaction mixture is basic in nature.
(III) In this reaction heat is absorbed.
(IV) This reaction is not a neutralisation reaction.
Which of these are the correct comments ?
(A) I and III only
(B) I, II and III
(C) II, III and IV
(D) I and II only
Which of the following observations is true about dilute solution of acetic acid?
(A) It smells like vinegar and turns red litmus blue
(B) It smells like onion and turns blue litmus red
(C) It smells like orange and turns red litmus blue
(D) It smells like vinegar and turns blue litmus red
Give the structural formula of Acetic acid.
What is vinegar and glacial acetic acid?
Write the important uses of acetic acid.
Using appropriate catalysts, ethane can be oxidized to an alcohol. Name the alcohol formed when ethane is oxidized.
Explain the following reaction with an example.
Esterification
A spatula full of sodium carbonate is taken in a test tube and 2 mL of dilute ethanoic acid is added to it.
Write a chemical equation for the reaction.
