Which of the following shows a bronsted-lowry acid reacting?

The Bronsted - Lowry model states that an acid is a substance that donates protons, H+.

When an acid dissolves in water it donates the H+ to H2O molecules and form H3O+.

For example: HCl (aq) + H2O (l) > H3O+ (aq)+ Cl - (aq)

In this case HCl is the acid because it donates its H+ to H2O fo form H3O+.

Aslso, the proton, H+ of the acid may combine with other radicals. For example:

NH3 (aq) + H2O (l) --->  NH4 + (aq) + OH -

In this case H2O is an acid in front ot NH3, because H2O donates its H+ to NH3 to form NH4+.

So, you just need the reactions where one reactant is donating H+ to the other reactant. There you will have a Bronsted-Lowry acid.

The answer to this problem is. 67