Question

how does ethylene react with a)cl2, b)hbr ,c)h2so4, d) o3


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Answer 1

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

Reaction Mechanisms

a step-by-step account of how a reaction occurs (and why)
bond-breaking steps:
homolytic: one electron to each fragment
(generates radicals)
heterolytic: both electrons to one fragment
(generates ions)
bond-making steps:
homogenic or heterogenic

Electron Movement

electron-pushing arrows indicate the flow of electrons in a mechanism
electrophile:
electron-deficient species seeking a pair of electrons (a Lewis acid )
nucleophile:
electron-rich species that can provide a pair of electrons (a Lewis base)

Answer 2

ethylene with cl2 gives 1,2dichloro ethane :with hbr gives bromoethane: with h2so4 give ethane sulphonic acid:with o3 gives two moles of methanal