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प्रश्न
An organic acid X is a liquid, which often freezes during winter time in cold countries, having the molecular formula C2H4O2. On warming it with methanol in the presence of a few drops of concentrated sulphuric acid, a compound Y with a sweet smell is formed.
(a) Identify X and Y. Also write their formulae showing the functional group present in them.
(b) Write a chemical equation for the reaction involved.
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उत्तर
(a) The organic acid, X, which often freezes in the winters in cold countries, is ethanoic acid. It has the molecular formula CH3COOH.
The formula with its functional group is represented as:
When ethanoic acid is warmed with methanol in the presence of a few drops of concentrated sulphuric acid, the compound 'Y' with sweet fragrance is formed. This compound is called methyl ethanoate, and its molecular formula is CH3COOCH3.
The formula with its functional group is represented as:
(b) The chemical equation of the above stated reaction is as follows:
`CH_3 COOH + C_2 H_5 OH` 
`CH_3 COOC_2 H_5 + H_2O`
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संबंधित प्रश्न
For preparing soap in the laboratory we require an oil and a base. Which of the following combinations of an oil and a base would be best suited for the preparation of soap?
(a) Castor oil and calcium hydroxide
(b) Turpentine oil and sodium hydroxide
(c) Castor oil and sodium hydroxide
(d) Mustard oil and calcium hydroxide
Complete the following chemical equations:
C2H5OH+CH3COOH`("conc."H_2SO_4)/`>
Give the common name and IUPAC name of the following compound:
HCOOH
Name one chemical compound which can be used to distinguish between ethanol and ethanoic acid.
How would you distinguish experimentally between an alcohol and a carboxylic acid on the basis of a chemical property?
Write the names of three compounds which can be oxidised directly or in stages to produce acetic acid.
Acetic acid is a typical acid. Write one equation in case of its reactions with a bicarbonate.
Name the compound formed when acetic acid and ethanol react together.
If you are asked to report your observations about the following two properties of acetic acid, what would you report?
(i) Odour
(ii) Effect on litmus
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
Acetic acid solution turns:
(1) blue litmus red
(2) red litmus blue
(3) blue litmus colourless
(4) red litmus colourless
Draw the structural formula of a compound with two carbon atoms in the following case:
An alkane with a carbon to carbon single bond.
Using appropriate catalysts, ethane can be oxidized to an alcohol. Name the alcohol formed when ethane is oxidized.
State how the following conversions can be carried out:
Ethyl chloride to Ethyl alcohol
State how the following conversions can be carried out:
Ethene to Ethyl alcohol.
Identify the term or substance based on the descriptions given below:
Ice like crystals formed on cooling an organic acid sufficiently.
Draw the structural formula for the following:
Ethanoic acid
Ester is a sweet-smelling compound.
Ester is formed by the reaction between ______.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
