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Chemistry Part-II

Haloalkanes and Haloarenes

How will you bring about the following conversions? (i) Ethan

Chemistry Part-II

Class 12

NCERT

Chapter 1: Haloalkanes and Haloarenes

33 questions

Which compound in each of the following pairs will react faster in

S N^{2}

reaction with

O H^{-}

?
(i)

C H_{3} B r

C H_{3} I

(ii)

(C H_{3})_{3} CCl

C H_{3} Cl

How will you bring about the following conversions?

(i) Ethanol to but-1-yne (ii) Ethane to bromoethene

(iii) Propene to1-nitropropane (iv) Toluene to benzyl alcohol

(v) Propene to propyne (vi) Ethanol to ethyl fluoride

(vii) Bromomethane to propanone (viii) But-1-ene to but-2-ene

(ix) 1-Chlorobutane to n-octane (x) Benzene to biphenyl.

Explain why?

(i) The dipole moment of chlorobenzene is lower than that of cyclohexyl chloride?
(ii) Alkyl halides, though polar, are immiscible with water?
(iii) Grignard reagents should be prepared under anhydrous conditions?

View all question

Chapter 2: Alcohols, Phenols and Ethers

38 questions

Chapter 3: Aldehydes, Ketones and Carboxylic Acids

26 questions

Chapter 4: Amines

18 questions

Chapter 5: Biomolecules

25 questions

Chapter 6: Polymers

21 questions

Chapter 7: Chemistry in Everyday Life

27 questions

Question

Medium

Solving time: 15 mins

How will you bring about the following conversions?

(i) Ethanol to but-1-yne    (ii) Ethane to bromoethene

(iii) Propene to1-nitropropane    (iv) Toluene to benzyl alcohol

(v) Propene to propyne   (vi) Ethanol to ethyl fluoride

(vii) Bromomethane to propanone (viii) But-1-ene to but-2-ene

(ix) 1-Chlorobutane to n-octane (x) Benzene to biphenyl.

Name: Video solution 1: [Solved] How will you bring about the following conversions?(i) Ethanol to but-1-yne (ii) Ethane to bromoethene (iii) Propene to1-nitropropane (iv) Toluene to benzyl alcohol (v) Propene to propyne (vi) Ethanol to ethyl fluoride (vii) Bromomethane to propanone (viii) But-1-ene to but-2-ene(ix) 1-Chlorobutane to n-octane (x) Benzene to biphenyl. - Chemistry Part-II
Uploaded: 2023-12-12T13:46:10.000Z
Duration: 2 min
Description: Video solution 1: [Solved] How will you bring about the following conversions?(i) Ethanol to but-1-yne (ii) Ethane to bromoethene (iii) Propene to1-nitropropane (iv) Toluene to benzyl alcohol (v) Propene to propyne (vi) Ethanol to ethyl fluoride (vii) Bromomethane to propanone (viii) But-1-ene to but-2-ene(ix) 1-Chlorobutane to n-octane (x) Benzene to biphenyl. - Chemistry Part-II

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Updated on: Dec 12, 2023

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Chemistry Part-II (NCERT)

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How will you bring about the following conversions?

(i) Ethanol to but-1-yne (ii) Ethane to bromoethene

(iii) Propene to1-nitropropane (iv) Toluene to benzyl alcohol

(v) Propene to propyne (vi) Ethanol to ethyl fluoride

(vii) Bromomethane to propanone (viii) But-1-ene to but-2-ene

(ix) 1-Chlorobutane to n-octane (x) Benzene to biphenyl.

7 mins ago

Discuss this question LIVE

7 mins ago

Text solutionVerified

i) Ethanol to but-1-yne

e t han o l C H_{3} - C H_{2} - O H + SOC l_{2} P yr i d in e e t h y l c h l or i d e C H_{3} - C H_{2} - Cl + S O_{2} ↑ + H Cl ↑

a ce t y l e n e H C \equiv C H + N a N H_{2} l i q . N H_{3} so d i u m a ce t y l i d e H C \equiv C^{-} N a^{+}

C H_{3} - C H_{2} - Cl + H C \equiv C^{-} N a^{+} \to b u t - 1 - y n e C H_{3} - C H_{2} - C \equiv C H + N a Cl

ii) Ethane to bromoethene

e t han e C H_{3} - C H_{3} + B r_{2} U V l i g h t C H_{3} - C H_{2} B r a l c . K O H - H B r C H_{2} = C H_{2} B r_{2} B r - C H_{2} - C H_{2} - B r

B r - C H_{2} - C H_{2} - B r a l c . K O H - H B r b ro m oe t h e n e C H_{2} = C H B r

iii) Propene to 1-nitropropane

p ro p e n e C H_{3} - C H = C H_{2} + H B r P ero x i d e C H_{3} - C H_{2} - C H_{2} B r A g N O_{2} 1 - ni t ro p ro p an e C H_{3} - C H_{2} - C H_{2} N O_{2} + A g B r

iv) Toluene to benzyl alcohol

t o l u e n e C_{6} H_{5} - C H_{3} + C l_{2} U V l i g h t C_{6} H_{5} - C H_{2} Cl N a O H b e n zy l a l co h o l C_{6} H_{5} - C H_{2} O H + N a Cl

v) Propene to Propyne

p ro p e n e C H_{3} - C H = C H_{2} + B r_{2} CC l_{4} C H_{3} - C H (B r) - C H_{2} (B r) N a N H_{2} l i qN H_{3} p ro p y n e C H_{3} - C \equiv C H

vi) Ethanol to ethyl fluoride

e t h y l a l co h o l C H_{3} - C H_{2} O H + H Cl Z n C l_{2} e t h y l c h l or i d e C H_{3} - C H_{2} - Cl + H_{2} O

C H_{3} C H_{2} - Cl + A g F \to e t h y l f l u or i d e C H_{3} - C H_{2} - F

(Swarts reaction)

vii) Bromomthane to propanone

b ro m o m e t han e C H_{3} - B r K CN C H_{3} - CN C H_{3} - M g - B r C H_{3} - C C H_{3} = NM g B r h y d ro l ys i s p ro p an o n e C H_{3} - CO - C H_{3}

viii) But-1-ene to but-2-ene

B u t - 1 - e n e C H_{3} - C H_{2} - C H = C H_{2} H B r M a r k o w nik o f f^{'} s r u l e C H_{3} - C H_{2} - C H (B r) - C H_{3} a l c . K O H - H B r b u t - 2 - e n e C H_{3} - C H = C H - C H_{3}

ix) 1-chlorobutane to n-octane

Wurtz synthesis

1 - c h l oro b u t an e 2 C H_{3} - C H_{2} - C H_{2} - C H_{2} - Cl + 2 N a d ry e t h er n - oc t an e C H_{3} - (C H_{2})_{6} - C H_{3} + 2 N a Cl

x) Benzene to biphenyl

b e n ze n e C_{6} H_{6} + B r_{2} d a r k, F e b ro m o b e n ze n e C_{6} H_{5} - B r

Wurtz-Fittig reaction

2 C_{6} H_{5} - B r + 2 N a d ry e t h er bi p h e n y l C_{6} H_{5} - C_{6} H_{5} + 2 N a B r

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Practice more questions from Chemistry Part-II (NCERT)

Which compound in each of the following pairs will react faster in

S N^{2}

reaction with

O H^{-}

?
(i)

C H_{3} B r

C H_{3} I

(ii)

(C H_{3})_{3} CCl

C H_{3} Cl

How will you bring about the following conversions?

(i) Ethanol to but-1-yne (ii) Ethane to bromoethene

(iii) Propene to1-nitropropane (iv) Toluene to benzyl alcohol

(v) Propene to propyne (vi) Ethanol to ethyl fluoride

(vii) Bromomethane to propanone (viii) But-1-ene to but-2-ene

(ix) 1-Chlorobutane to n-octane (x) Benzene to biphenyl.

Explain why?

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Question Text	How will you bring about the following conversions? (i) Ethanol to but-1-yne (ii) Ethane to bromoethene (iii) Propene to1-nitropropane (iv) Toluene to benzyl alcohol (v) Propene to propyne (vi) Ethanol to ethyl fluoride (vii) Bromomethane to propanone (viii) But-1-ene to but-2-ene (ix) 1-Chlorobutane to n-octane (x) Benzene to biphenyl.
Updated On	Dec 12, 2023
Topic	Haloalkanes and Haloarenes
Subject	Chemistry
Class	Class 12
Answer Type	Text solution:1 Video solution: 1
Upvotes	89
Avg. Video Duration	2 min

Text solutionVerified

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