lewis base or acid

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Tiffanny_Carranza_2D
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lewis base or acid

Postby Tiffanny_Carranza_2D » Fri Nov 13, 2020 5:13 pm

can anyone explain how do you know when a species is an acid or a base?

thank you

Ashlen Bullock 1H
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Re: lewis base or acid

Postby Ashlen Bullock 1H » Fri Nov 13, 2020 5:31 pm

A species is a lewis acid when it accepts an electron and a species is a lewis base when it donates an electron.

Emma_Barrall_3J
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Re: lewis base or acid

Postby Emma_Barrall_3J » Fri Nov 13, 2020 6:15 pm

Lewis acids are electron acceptors and lewis bases are electron donors.

Julianna Shimabukuro 1D
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Re: lewis base or acid

Postby Julianna Shimabukuro 1D » Fri Nov 13, 2020 6:20 pm

Lewis acids can accept electrons, which tends to be if they do not have a complete octet or are exceptions where they can have expanded octets. Lewis bases donate electrons, so they have lone pair electrons.

BaileyB1F
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Re: lewis base or acid

Postby BaileyB1F » Fri Nov 13, 2020 6:32 pm

An example to help understand is FeCl3 + Cl-. The Cl- is a base because it is going to donate its electron to FeCl3, making FeCl3 the base because it accepts the electron.

Simer_Shera_2D
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Re: lewis base or acid

Postby Simer_Shera_2D » Fri Nov 13, 2020 8:01 pm

Acids accept electrons and bases donate!

Izamary Marquez 2H
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Re: lewis base or acid

Postby Izamary Marquez 2H » Fri Nov 13, 2020 10:38 pm

Would this make cations and anions more likely to be acids or donors? Is there a correlation?

Julianna_flores3E
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Re: lewis base or acid

Postby Julianna_flores3E » Fri Nov 13, 2020 10:54 pm

Lewis acids accept electrons and lewis bases give them away. I think that there would be a correlation between cations and anions since they have + a d - charges.

Melissa Solis 1H
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Re: lewis base or acid

Postby Melissa Solis 1H » Fri Nov 13, 2020 10:59 pm

Izamary Marquez 2L wrote:Would this make cations and anions more likely to be acids or donors? Is there a correlation?


I think that anions would be more likely to be the lewis acids while the cations would be correlated with the lewis bases since they are getting rid/donating their electrons. I'm not sure if the prof. specifically said there was a correlation between them but it makes sense.

Tanner Bartyczak 1K
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Re: lewis base or acid

Postby Tanner Bartyczak 1K » Sat Nov 14, 2020 11:32 pm

I believe there is a correlation. According to google, "All anions are Lewis bases, but not all Lewis bases are anions."

SelenaDahabreh1D
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Re: lewis base or acid

Postby SelenaDahabreh1D » Sun Nov 15, 2020 12:08 am

Lewis acids accept electrons, whereas Lewis bases donate electrons. It helps to draw out the Lewis structures to determine whether a molecule is a Lewis acid or base.

vbarian27
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Re: lewis base or acid

Postby vbarian27 » Sun Nov 15, 2020 12:55 am

acids accept bases donate. I remember it by thinking a for acid goes with a for accept and the b and the d for base and donate are symmetrical

Katie Nye 2F
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Re: lewis base or acid

Postby Katie Nye 2F » Sun Nov 15, 2020 1:07 am

Lewis acid accept electrons while Lewis bases give the electrons.

Gian Boco 2G
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Re: lewis base or acid

Postby Gian Boco 2G » Sun Nov 15, 2020 4:55 am

Izamary Marquez 2L wrote:Would this make cations and anions more likely to be acids or donors? Is there a correlation?

Cations donate electrons, resulting in their positive charge, making them Lewis bases. Anions accept electrons and then become negatively charged, making them Lewis acids.

Armen_Isayan_2L
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Re: lewis base or acid

Postby Armen_Isayan_2L » Sun Nov 15, 2020 3:51 pm

Hello! A Lewis acid is the substance which accepts electrons, an electron-pair acceptor. Whereas the Lewis base donates electrons, an electron-pair donor.

Astha Patel 2J
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Re: lewis base or acid

Postby Astha Patel 2J » Sun Nov 15, 2020 3:55 pm

A lewis acid accpets electrons and therefore is usually a cation, a molecule where the central atom is electron deficient, or a molecule with polar double bonds.
A lewis base donates the electrons and therefore is usually an anion, a molecule where atoms have excess electrons or a molecule with lone-pairs of electrons.


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