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प्रश्न
When acetaldehyde is oxidized with acidified potassium dichromate, it forms ______.
विकल्प
ester
ethanol
acetic acid
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उत्तर
When acetaldehyde is oxidized with acidified potassium dichromate, it forms acetic acid.
संबंधित प्रश्न
Consider the following comments about saponification reactions:
I. Heat is evolved in these reactions.
II. For quick precipitation of soap, sodium chloride is added to the reaction mixtures.
III. Saponification reactions are a special kind of neutralisation reactions.
IV. Soaps are basic salts of long-chain fatty acids.
The correct comments are
(a) I, II and III
(b) II, III and IV
(c) I, II and IV
(d) Only I and IV
Name two oxidising agents which can oxidise ethanol to ethanoic acid.
What do you notice when acetic acid reacts with alcohol?
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
State how the following conversions can be carried out:
Ethene to Ethyl alcohol.
Give balanced chemical equations for the following conversion :
Ethanoic acid to ethyl ethanote
Assertion (A): Esterification is a process in which a sweet-smelling substance is produced.
Reason (R): When esters react with sodium hydroxide an alcohol and sodium salt of carboxylic acid are obtained.
CH3–CH2–CHO : propanal : : CH3–COOH : _______
Give the balanced chemical equation of the reaction.
Oxidation of ethanol by acidified potassium dichromate.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
