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  4. Which o f the following species are Lewis acids? (I) OH- (II) F- (III) H+ (IV) BCl3

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Q. Which o f the following species are Lewis acids? (I) $OH^- $ (II) $F^- $ (III) $H^+ $ (IV) $BCl_3 $

Equilibrium

Solution:

$H^+ $ and $BCl_3 $ are Lewis acids because they act as electron pair acceptors but $OH^- $ and $F^- $ are Lewis bases be cause they act as electron pair donors