In the reaction NH_3 + BF_3 rightleftharpoons | vedclass

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Question

(A) In the reaction $NH_3 + BF_3 ightleftharpoons NH_3 	o BF_3$,the $NH_3$ molecule has a lone pair of electrons on the nitrogen atom,which it dona

Vedclass · Accepted Answer

Lewis acid

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(A) In the reaction $NH_3 + BF_3 ightleftharpoons NH_3 	o BF_3$,the $NH_3$ molecule has a lone pair of electrons on the nitrogen atom,which it donates to the $BF_3$ molecule.$BF_3$ acts as an electron pair acceptor because the boron atom has an incomplete octet.According to the Lewis concept,a substance that accepts an electron pair is a Lewis acid.Therefore,$BF_3$ is a Lewis acid.

In the reaction $NH_3 + BF_3 \rightleftharpoons NH_3 \to BF_3$,$BF_3$ is

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