Given the equation representing a reaction at equilibrium: According to one acid-base theory, which

Regents Chemistry Exam August 2022

50. Given the equation representing a reaction at equilibrium:

Explanation: Looking from the left to the right, we need to ask ourselves who lost a hydrogen (H+ donor). H2O becomes OH- so it lost a hydrogen was the donor. Now we can do the same thing looking from products to the reactants. NH4+ lost the hydrogen to become NH3.