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chemistry > reaction map > Flashcards

reaction map Flashcards

1
Q

what is the mechanism where a haloalkane is formed from an alkane?

A

free radical subsitution

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2
Q

what is the condition for free radical substitution?

A

UV light

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3
Q

what is the reagent for free radical substitution?

A

Cl2/Br2

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4
Q

what is the observation in free radical substitution?

A

orange to colourless

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5
Q

what are the stages for free radical substitution?

A
  1. initiation
  2. propagation
  3. termination
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6
Q

why is UV light needed to start a free radical substitution reaction?

A

it provides energy to break the bond between the halogens

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7
Q

define ‘free radical’

A

a species which has a single unpaired electron

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8
Q

what is the overall equation for free radical substitution between CH4 and Cl2?

A

CH4 + Cl2 -> CH3Cl + HCl

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9
Q

what is the initiation equation for CH4 and Cl2?

A

Cl2 -> 2Cl.

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10
Q

what are the propagation equations for CH4 and Cl2?

A

Cl. + CH4 -> HCl + .CH3
.CH3 + Cl2 -> CH3Cl.

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chemistry (34 decks)

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