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प्रश्न
Name the functional group present in an organic compound which gives brisk effervescence with NaHCO3.
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उत्तर
Carboxylic acid group (-COOH) is the functional group which gives brisk effervescence with NaHCO3.
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संबंधित प्रश्न
While studying saponification reaction, a student measures the temperature of the reaction mixture and also finds its nature using blue/red litmus paper. On the basis of his observations the correct conclusion would be
(A) the reaction is exothermic and the reaction mixture is acidic.
(B) the reaction is endothermic and the reaction mixture is acidic.
(C) the reaction is endothermic and the reaction mixture is basic.
(D) the reaction is exothermic and the reaction mixture is basic.
What do you observe when you drop a few drops of acetic acid to test tubes containing
(a) phenolphthalein
(b) distilled water
(c) universal indicator
(d) sodium hydrogen carbonate powder
Complete the following chemical equations:
C2H5OH+CH3COOH`("conc."H_2SO_4)/`>
Give the common names and IUPAC names of the following compounds of CH3COOH.
Write the formulae of ethanoic acid.
Name two oxidising agents which can oxidise ethanol to ethanoic acid.
How does ethanoic acid react with sodium hydrogen carbonate? Give equation of the reaction which takes place.
Esters are sweet-smelling substances and are used in making perfumes. Describe an activity for the preparation of an ester with the help of a well labelled diagram. Write an equation for the chemical reaction involved in the formation of the ester. Also write the names of all the substances involved in the process of esterification.
Vinegar is a solution of about:
(a) 5 to 8 per cent ethanoic acid in alcohol
(b) 5 to 8 per cent ethanoic acid in water
(c) 50 to 80 per cent ethanoic acid in water
(d) 50 to 80 per cent ethanoic acid in alcohol
Write the names of the first three members of the carboxylic acid series.
A student puts a drop of acetic acid first on a blue litmus paper and then on a red litmus paper. He would observe that
(A) the red litmus paper turns colourless and there is no change in the blue litmus paper.
(B) the red litmus paper turns blue and the blue litmus paper turns red.
(C) there is no change in the red litmus paper and the blue litmus paper turns red.
(D) there is no change in the blue litmus paper and the red litmus paper turns blue.
How is ethyne prepared in the laboratory?
Write three physical properties of acetic acid.
Write a balanced equation for the following:
Write the equation for the preparation of ethylene from ethyl alcohol.
Draw the structural formula of a compound with two carbon atoms in the following case:
An alkane with a carbon to carbon single bond.
Identify the term or substance based on the descriptions given below:
Hydrocarbon containing a triple bond used for welding purposes
Distinguish between esterification and saponification reactions with the help of chemical equations for each.
Write the molecular formula of the given compound.
Ethanoic acid
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
A student while observing the properties of acetic acid would report that this smells like ______.
