Boric acid acidity

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Sara Sadrolsadat 1G
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Joined: Fri Sep 28, 2018 12:16 am

Boric acid acidity

Postby Sara Sadrolsadat 1G » Sat Dec 08, 2018 2:35 pm

As given in question 12.119 from the 6th edition, it is determined that B(OH)2 acts as a lewis acid as it accepts electron pairs OH from water. But in the solutions manual is also says that its acidity is not due to its dissociation. What does that mean in this context? Is that in reference to it being a weak acid?

Atul Saha 3D
Posts: 30
Joined: Fri Sep 28, 2018 12:25 am

Re: Boric acid acidity

Postby Atul Saha 3D » Sat Dec 08, 2018 2:50 pm

So lewis acids do not dissociate protons (hence the distinction with dissociation). The boron has an incomplete octet, which is why it can accept the lone pairs to fill the 2p orbital. This is not a reference to its strength as an acid.

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