haloalkanes Flashcards

(11 cards)

1
Q

what is a haloalkane

A

an organic molecule that contains at least one halogen atom (the functional group)

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2
Q

how to name haloalkenes ( if multiple halogens on one molecule)

A

alphabetical order
bromo
chloro
iodo
floro

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2
Q

are there dipoles on haloalkanes

A

C is delta positive and halogen is delta negative

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3
Q

define nucleophile

A

species that can donate a pair of electrons to an area of low electron density to form a new covalent bond

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4
Q

where do you draw the arrows in nucleophilic substitution

A

from lone pair to C with halogen
then to halogen
then species being substituted replaces halogen

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5
Q

what are the conditions required for nucleophilic substitution

A

aqueous sodium hydroxide
heating under reflux

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6
Q

why are haloalkanes more reactive than alkanes

A

haloalkanes have polar bonds where C (delta+) is more susceptible to nucleophilic attack

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7
Q

define hydrolysis

A

breaking down a molecule using water

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8
Q

how to turn a haloalkane into an alcohol

A

nucleophilic substitution using NaOH and heating under reflux

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9
Q

when the haloalkane has a stronger polar bond (C-Cl most)
what happens to the rate of hydrolysis

A

it increases
C-Cl bond breaks faster
the weaker the covalent polar bond, the faster the rate
the more polar the bond, the fater the rate

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10
Q

how do you determine if something is a nucleophile

A

needs one lone pair of electrons

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