MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Diastereomers

From analysis...

Question

From analysis and molecular weight determination, the molecular formula of (A) is $C_{3} H_{7} N O$ . The compound gave following reactions.
(i) On hydrolysis it gives an amine (B) and a carboxylic acid (C)
(ii) Amine (B) reacts with benzene sulphonyl chloride and gives a product which is insoluble in aqueous sodium hydroxide solution.
(iii) Acid (C) on reaction with Tollen's reagent gives a silver mirror what are A, B and C.
Explain the reactions.

Open in App

Solution

On hydrolysis of $A$ having formula $C_{3} H_{7} N O$ gives amine $(B)$ and a carboxylic acid. $A$ should be acid amide. Amine $(B)$ reacts with benzene sulphonyl chloride and gives a product which is insoluble in aqueous $N a O H$ solution. So amine $(B)$ should be secondary amine. Acid $(C)$ reacts with Tollen's reagent to give silver $(A g)$ mirror. So, acid should be $H C O O H$ because it has aldehydic hydrogen which can be oxidized by Tollen's reagent.
(Refer to Image)
$∴$ So $A$ will be $N, N - d i m e t h y l f o r m a m i d e$

Suggest Corrections

thumbs-up

0

Similar questions

Q. An organic compound

A

with molecular formula

C_{2} H_{7} N

on reaction with nitrous acid gives a compound

B

B

on controlled gives compound

C

C

reduces Tollen's reagent to given silver mirror and

D

B

D

in the presence of concentrated sulphuric acid to give sweet smelling compound

E

A, B, C, D

E

. Give the reaction of

C

Q. An aromatic compound 'A' (Molecular formula

C_{8} H_{8} O

) gives positive

2, 4

-DNP test. It gives a yellow precipitate of compound '

B

' on treatment with iodine and sodium hydroxide solution. Compound '

A

' does not give Tollen's or Fehling's test. On drastic oxidation with potassium permanganate it forms a carboxylic acid '

C

' (Molecular formula

C_{7} H_{6} O_{2}

), which is also formed along with the yellow compound in the above reaction. Identify

A

B

C

and write all the reactions involved.

Q. An organic compound C(molecular formula C2 H4 O2) reacts with sodium metal to form a compound B and evolves a gas which burns with a pop sound.Compound C on treatment with an alcohol A in presence of an acid forms a sweet smelling compound S(molecular formula C4 H8 O2).On addition of sodium hydroxide to C it also gives B and water.S on treatment with Sodium Hydroxide solution gives back B and A.
Identify A,B,C and and write chemical equation for all the four reactions involved.

Q. An organic compound (A) with molecular formula

C_{8} H_{8} O

forms an orange-red precipitate with 2,4 DNP and gives a yellow precipitate of compound (B) on treatment with iodine and sodium hydroxide solution. Compound (A) does not give Tollen's or Fehling test but on drastic oxidation with potassium permanganate, it gives (C) which on reaction with thionyl chloride gives a compound (D) having formula

C_{7} H_{5} O C l

. (D) on reaction with compound (E) having general formula

R_{2} C d

gives back (A)/ Identify (A), (B), (C), (D) and (E). Also, give chemical equations for the reaction involved.

Q. (a) Compound

(A)

with molecular formula

C_{2} H_{4} O

reduces Tollen's reagent.

(A)

on treatment with

H C N

(B)

(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}

(A), (B), (C)

(D)

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

{A l}^{3 +}

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

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

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

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.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Enantiomers and Diastereomers

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon