Question

Question 7.36 Which of the followings are Lewis acids? H2O, BF3, H+, and NH4 (+)

Class XI Equilibrium Page 228

Answer 1

Hi

Here is your answer,

Lewis acid have a tendency to accept electrons. Electrons deficient or positively charged species have such tendency.

BF3 , H+ and NH4 (+) acts as Lewis acid.


Hope it helps you!

Answer 2

according to Bronsted - Lowry concept : lewis acid have tendency to accept electrons. it means lewis acid is electron deficient or positive charged species.

Here, BF₃   is electron deficient compound so, it is lewis acid.
         H⁺ is positive charged species so, it is lewis acid.
          NH⁺ is a positive charged species, so it is lewis acid.