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Standard XII

Chemistry

Nomenclature of Carbonyls

The compound ...

Question

The compound having the molecular formula $C_{2} H_{4} O_{2}$ is a :

ketone

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aldehyde

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acid

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ether

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Solution

The correct option is B acid
Carboxylic acid can be recognised by using general formula
$C_{n} H_{2} n O_{2} .$ Here it is an acid named acetic acid.
Acetic acid, Ethanoic acid, ${C H}_{3} C O O H$

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Similar questions

Q. A compound X is formed by the reaction of carboxylic acid having the molecular formula C2 H4 O2 and alcohol Y in the presence of concentrated H2 s o4 the same carboxylic acid is obtained by oxidation of alcohol Y name the compound X and Y give the chemical equation for the reaction

Q. Choose the correct answer from the four alternatives given in the brackets:
Alkanes have the general formula

C_{n} H_{2 n + 2}

. The molecular formula of the first hydrocarbon is ______.
(

{C H}_{4}, C_{2} H_{4}, C_{2} H_{6}, C_{2} H_{2}

)

Q. A compound has an empirical formula

C_{2} H_{4} O

. An independent analysis gave a value of 66.08 for its vapour density. What is the correct molecular formula?

[1 mark]

Q. An organic compound with molecular formula

C_{2} H_{4} O_{2}

produces brisk effervescence on addition of sodium carbonate/bicarbonate.
(a) Identify the organic compound
(b) Name the gas evolved.
(c) How will you test the gas evolved ?
(d) Write the chemical equation for the above reaction.
(e) List two important uses of the above compound

Q. (a) Compound

(A)

with molecular formula

C_{2} H_{4} O

reduces Tollen's reagent.

(A)

on treatment with

H C N

gives compound

(B)

. Compound

(B)

on hydrolysis with an acid gives compound

(C)

with molecular formula

C_{3} H_{6} O_{3}

which is an optically active compound. Compound

(A)

on reduction with

N_{2} H_{4} / C_{2} H_{5} O N a

gives a hydrocarbon

(D)

of molecular formula

C_{2} H_{6}

. Identify

(A), (B), (C)

and

(D)

and explain the reactions.
(b) Ionic conductance at infinite dilution of

{A l}^{3 +}

and

{S O}_{4}^{2 -}

are

189 {o h m}^{- 1} {c m}^{2} g m

{e q u i v}^{- 1}

and

160 {o h m}^{- 1} {c m}^{2} g m

{e q u i v}^{- 1}

. Calculate equivalent and molar conductance of the electrolyte at infinite dilution.

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The compound having the molecular formula C2H4O2 is a :

The correct option is B acidCarboxylic acid can be recognised by using general formulaCnH2nO2. Here it is an acid named acetic acid.Acetic acid, Ethanoic acid, CH3COOH

The compound having the molecular formula $C_{2} H_{4} O_{2}$ is a :

The correct option is B acid
Carboxylic acid can be recognised by using general formula
$C_{n} H_{2} n O_{2} .$ Here it is an acid named acetic acid.
Acetic acid, Ethanoic acid, ${C H}_{3} C O O H$