Which of the following compounds can be considered a lewis acid and not a bronsted-lowry acid? a acetylene hydronium ion © iron (iii) bromide d hydrochloric acid

iron (III) bromide

Explanation:

Bronsted-Lowry acid -

The species which can release proton , when dissolved in water .

Lewis acid -

The electron deficient species are called the Lewis acid .

From the question ,

The iron (III) bromide is a Lewis acid but not a Bronsted- Lowry acid because it can accept electrons pairs but cannot release proton .

The other options are -

The hydronium ion, the hydrochloric acid and the acetylene are Bronsted- Lowry acids because they can release proton .

And since ,  all the Bronsted- Lowry acids are Lewis acids .