Question

What substance is acting as the Brønsted-Lowry base in the forward reaction below?

Answer 1

Please provide complete info... ;)

Answer 2

What substance is acting as the Brønsted-Lowry base in the forward reaction below?

H2O + NH3 yields NH4+ + OH-

Answer 3

Brønsted-Lowry base is any chemical species capable of accepting a H+ from an acid.

In this case NH3 is accepting H+ from our acid H2O and forming NH4. So the answer is NH3