in the following reaction, H₂SO₄ + H₂O ↔ HSO₄⁻ + H₃O+, which one is the acid, and which one is the base

Answer 1

The acid is the one giving away "H" and the base is the one accepting the "H".

So, in this equation, you see that H2SO4 became HSO4-, so it gave a way an "H" making it the ACID.

H2O became H3O+ so it accepted the "H", so it is the BASE