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प्रश्न
Why is glacial acetic acid called so?
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उत्तर
The melting point of pure ethanoic acid is 290 K and hence it often freezes during winter in cold climates. This gave rise to its name glacial acetic acid.
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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
Fill in the following blank with suitable word:
The next higher homologue of ethanol is ...............
How is ethanoic acid obtained from ethanol? Write down the chemical equation of the reaction involved.
A student takes Na2CO3 powder in a test tube and pours some drops of acetic acid over it. He observes:
(A) no reaction in the test tube
(B) colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) white fumes with smell of vinegar
Write the important uses of acetic acid.
Write the chemical equation for the following:
Combustion of methane
State how the following conversions can be carried out:
Ethyl chloride to Ethyl alcohol
Ester is a sweet-smelling compound.
Observe the figure and write the answers to the following questions.
- Write the name of the reaction shown in the following figure.
- Write the above chemical reaction in the form of a balanced equation.
- Write the name of the product produced in the above reaction, write a use.
- Write the name of the catalyst used in the above reaction.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
