Question

ch3 ch2 ch2 प्लस h3o प्लस gives
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Answer 1

Answer:

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Answer 2

Reaction Types

additions

A + B --> C

H-Cl + CH2=CH2 --> CH3-CH2-Cl

eliminations

X --> Y + Z

CH3-CH2-Cl --> CH2=CH2 + H-Cl

substitutions

A-B + C-D --> A-C + B-D

CH4 + Cl2 --> CH3-Cl + H-Cl

rearrangements

X --> Y

cyclopropane --> propene

HCl plus Ethene

CH2=CH2 + H-Cl --> CH3-CH2-Cl

an electrophilic addition

reaction type: addition

reagent type: an electrophile

HCl, actually H+, a strong Lewis acid

Addition Mechanism

pi bond is relatively reactive, especially towards electrophiles

it provides a good source of electrons

addition of H+ to CH2=CH2 forms a new C-H sigma bond

the electrons for the new bond came from the pi bond

the other C is left with only 6 e-

Carbocation Intermediate

an intermediate is formed in the reaction mechanism

CH2=CH2 + H+ --> CH3-CH2+

carbocation: a carbon atom with only 3 bonds (6 e-) and a positive charge

structure: sp2 hybridized (trigonal)

Formation of Chloroethane

the reaction is completed as chloride anion (a nucleophile) adds to the carbocation (an electrophile)

CH3-CH2+ + Cl- ---> CH3-CH2-Cl

Alkene Addition Reactions

pi bonds undergo addition reactions

CH2=CH2 + HCl --> CH3CH2Cl

in general,

C=C + HX --> H-C-C-X

alkenes react with hydrogen halides to form alkyl halides