Sapling #6 and lewis acid and bases in general

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Shreya Patel- 2D
Posts: 96
Joined: Wed Sep 30, 2020 10:01 pm

Sapling #6 and lewis acid and bases in general

Postby Shreya Patel- 2D » Sat Nov 14, 2020 11:17 pm

I have an extremely hard time understanding how to tell if something is a lewis acid or lewis base. Especially when they are not ions! For example, how do I know that AlCl3 accepts electrons?

Stuti Pradhan 2J
Posts: 159
Joined: Wed Sep 30, 2020 9:32 pm
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Re: Sapling #6 and lewis acid and bases in general

Postby Stuti Pradhan 2J » Sat Nov 14, 2020 11:28 pm

I typically look at what it is bonding with to figure it out. For example, in the question you are referring to, the AlCl3 reacts with Cl-, which donates a pair of electrons. Al is also a metal and a cation with an empty valence shell, so it will most likely accept electrons. On the other hand, Cl is an anion and Cl- has electrons to donate, so that can also help figure out which compound is donating a pair of electrons vs accepting them.

Hope this helps!


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