Identifying Lewis acid

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Isabel Nakoud 4D
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Joined: Fri Sep 28, 2018 12:27 am

Identifying Lewis acid

Postby Isabel Nakoud 4D » Mon Dec 03, 2018 8:57 pm

In the reaction,

Cl- + SO2 --> SO2Cl

Both Cl- and the S in SO2 have lone pairs. Why is Cl- the Lewis acid and not SO2?

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Joined: Fri Sep 28, 2018 12:26 am

Re: Identifying Lewis acid

Postby daisyjimenezt » Mon Dec 03, 2018 9:57 pm

I think it is because Cl- has a high electron affinity

Kevin ODonnell 2B
Posts: 62
Joined: Fri Sep 28, 2018 12:24 am

Re: Identifying Lewis acid

Postby Kevin ODonnell 2B » Mon Dec 03, 2018 10:52 pm

Lewis acids accept pairs of electrons. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves. Therefore we can assume that if an atom is more electronegative than an atom then it will be the acid since it will be more likely to accept the pairs of electrons.

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