Lewis Acids and Bases

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Chelsea Culi 3F
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Joined: Fri Sep 24, 2021 5:37 am

Lewis Acids and Bases

Postby Chelsea Culi 3F » Sun Nov 07, 2021 12:39 am

How are you supposed to know if something is a Lewis acid or base?

Samantha Quevedo 2L
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Joined: Fri Sep 24, 2021 6:00 am

Re: Lewis Acids and Bases

Postby Samantha Quevedo 2L » Sun Nov 07, 2021 9:50 am

Hello! I am not sure if you're asking how to recognize it if you were given an example of a lewis structure, but I do know that a key difference to tell between the two is that a lewis acid is an acceptor of electrons and a lewis base is a donor of electrons.

Shriya_Amara_1G
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Re: Lewis Acids and Bases

Postby Shriya_Amara_1G » Sun Nov 07, 2021 10:03 am

A lewis acid accepts electrons and a lewis base donates electrons. A lewis acid should have a positive charge and a lewis base should have a negative charge.

Daniel N
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Re: Lewis Acids and Bases

Postby Daniel N » Sun Nov 07, 2021 6:21 pm

A Lewis acid is a substance that accepts a pair of electrons to form a covalent bond. A Lewis base is a substance that donates a pair of electrons to form a covalent bond.

Caitlyn Lo 2F
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Re: Lewis Acids and Bases

Postby Caitlyn Lo 2F » Sun Nov 07, 2021 11:34 pm

You can tell if something is either a Lewis acid or a Lewis base by seeing if the atoms either accept or donate their electrons. A Lewis acid occurs when the atoms accept electrons and a Lewis base occurs when the atoms donate their electrons.

Do Yeun Park
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Re: Lewis Acids and Bases

Postby Do Yeun Park » Wed Nov 10, 2021 5:30 pm

Hi!
If the structure is giving away electrons, then it's a Lewis Base. If the structure is receiving electrons, then it's a Lewis Acid.

Emily Hou 1H
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Re: Lewis Acids and Bases

Postby Emily Hou 1H » Wed Nov 10, 2021 5:33 pm

A lewis acid accepts electrons while a lewis base donates electrons. Molecules with lone pairs tend to donate electrons and electron-deficient central atoms such as Be tend to accept electrons.

AndreyCastellanos 3H
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Re: Lewis Acids and Bases

Postby AndreyCastellanos 3H » Wed Nov 10, 2021 6:39 pm

Lewis acid accepts electrons
Lewis base gives electrons
A lewis acid should have a positive charge and a lewis base should have a negative charge

Heba Bounar 3K
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Re: Lewis Acids and Bases

Postby Heba Bounar 3K » Fri Nov 12, 2021 2:33 pm

Hi! Lewis acids accept an electron pair while Lewis bases donate an electron pair. If a molecule has a lone pair and is negatively charged, it is likely to be a Lewis base. If a molecule is positively charged it is likely to be a Lewis acid. Molecules with polar double bonds can also accept electrons, so they could be a Lewis acid as well. Hope this helps!

Omar Alkhalili 1J
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Re: Lewis Acids and Bases

Postby Omar Alkhalili 1J » Fri Nov 12, 2021 2:42 pm

Hello! Lewis acids accept electrons (electron acceptors) while Lewis bases give the electrons (electron donors).

Litsa Dimit 1D
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Re: Lewis Acids and Bases

Postby Litsa Dimit 1D » Sat Nov 13, 2021 12:39 am

A lewis acid is typically accepting electrons, so example OH- F- while a lewis base donates electrons, H+,K+

Shannon Lau 14B - 1H
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Re: Lewis Acids and Bases

Postby Shannon Lau 14B - 1H » Sat Nov 13, 2021 3:05 pm

Lewis acids are ones that accept electrons so an easy way to tell is if they have a positive charge and in that case in order to have a formal charge of 0 the atom must gain/accept electrons. Lewis bases are the ones that donate electrons and they often times have a negative charge and must give away electrons to have the most stable charge. If there aren't any charges we look at its electronegativity.

Vashe Sundar 3H
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Re: Lewis Acids and Bases

Postby Vashe Sundar 3H » Sat Nov 13, 2021 11:25 pm

A lewis acid accepts an electron, while a lewis base donates an electron.

Mia Orr 3B
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Re: Lewis Acids and Bases

Postby Mia Orr 3B » Sun Nov 14, 2021 2:04 pm

Lewis acids are species that accept electrons, while Lewis bases are species that donate electrons. Hope this helps!

Raizel Ferrer 1H
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Re: Lewis Acids and Bases

Postby Raizel Ferrer 1H » Sat Dec 04, 2021 11:06 pm

Lewis acids are an electron acceptor where as lewis bases are an electron donor.

cnyland
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Joined: Fri Sep 24, 2021 7:08 am

Re: Lewis Acids and Bases

Postby cnyland » Sat Dec 04, 2021 11:08 pm

If something has a bunch of lone pairs to give up electrons, a lot of the times look for N, then its a lewis base (electron pair donor) and if something is positively charged or doesn't have a full octet like Aluminum, Boron, it has room to accept a pair of electrons and can be viewed as a lewis acid (electron pair acceptor).

Kelly_Luong_1F
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Re: Lewis Acids and Bases

Postby Kelly_Luong_1F » Mon Dec 06, 2021 4:04 pm

By keeping track of the electron transfer. Lewis acids are electron-pair acceptors while Lewis bases are electron-pair donators.

dahlia Faruque
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Re: Lewis Acids and Bases

Postby dahlia Faruque » Mon Dec 06, 2021 4:48 pm

The easiest way to remember the difference between a Lewis Acid and a Lewis Base is to remember that a Lewis Acid accepts electrons while a Lewis base donates electrons.

Ashley Fakolujo 3H
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Re: Lewis Acids and Bases

Postby Ashley Fakolujo 3H » Mon Dec 06, 2021 4:54 pm

I know that when the formula has a negative charge, it’s a base and vice versa for the acid. But how do you determine it when there is no charge on the formula at all

erud
Posts: 117
Joined: Fri Sep 24, 2021 5:40 am

Re: Lewis Acids and Bases

Postby erud » Mon Dec 06, 2021 5:36 pm

Hi! For the final, we were supposed to know if something was an acid(electron acceptor), and a base(electron donor) There are also many other definitions of acids and bases that we went over in class.


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