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प्रश्न
On adding acetic acid to sodium hydrogen carbonate in a test tube, a student observes
(A) no reaction
(B) a colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) a strong smell of vinegar
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उत्तर
Acetic acid reacts with sodium hydrogen carbonate to form the salt sodium acetate and water with the evolution of CO2. This CO2 is a colourless, odourless gas. Thus, the student will observe bubbles of colourless and odourless gas.
The Correct Answer is C
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संबंधित प्रश्न
A student puts a drop of reaction mixture of a saponification reaction first a blue litmus paper and then on a red litmus paper. He may observe that:
(a) There is no change in the blue litmus paper and the red litmus paper turns white.
(b) There is no change in the red litmus paper and the blue litmus paper turns red.
(c) There is no change in the blue litmus paper and the red litmus paper turns blue.
(d) No change in colour is observed in both the litmus papers
A student adds a few drops of ethanoic acid to test tubes X, Y and Z containing aqueous solutions of sodium chloride, sodium hydroxide and sodium carbonate, respectively. If he now brings a burning splinter near the mouth of the test tubes immediately after adding ethanoic acid in each one of them, in which of the test tube or test tubes the flame will be extinguished?
(A) X and Y
(B) Y and Z
(C) X and Z
(D) only Z
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What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of conc. H2SO4?
Name two oxidising agents which can oxidise ethanol to ethanoic acid.
What do you observe when acetic acid is added to sodium bicarbonate?
What is thr boilng point of acetic acid?
Choose the correct answer:
Select the acid which contains four hydrozen atoms in it.
State how the following conversion can be carried out:
Ethyl chloride to Ethene.
Identify the term or substance based on the descriptions given below:
Ice like crystals formed on cooling an organic acid sufficiently.
