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प्रश्न
Reshu by mistake forgot to label the two test tubes containing Ethanol and Ethanoic acid. Suggest an experiment to identify the substances correctly? Illustrate the reactions with the help of chemical equations.
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उत्तर
By reaction with sodium carbonate/ bi carbonate 1M with the samples, ethanol will not react whereas ethanoic acid gives brisk effervescence.
\[\ce{2CH3COOH + Na2 CO3 -> 2CH3COONa +H2O + CO2}\]
OR
\[\ce{CH3COOH + NaHCO3 -> CH3COONa + H2O + CO2}\]
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संबंधित प्रश्न
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A student takes 2 mL acetic acid in a dry test tube and adds a pinch of sodium hydrogen carbonate to it. He makes the following observations:
I. A colourless and odourless gas evolves with a brisk effervescence.
II. The gas turns lime water milky when passed through it.
III. The gas burns with an explosion when a burning splinter is brought near it.
IV. The gas extinguishes the burning splinter that is brought near it.
The correct observations are:
(A) I, II, and III
(B) II, III and IV
(C) III, IV and I
(D) IV, I and II
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Ice like crystals formed on cooling an organic acid sufficiently.
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Suggest a method of testing the gas liberated in the reaction.
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