acid-base question

Question

Write a balanced equation that shows the reaction of ammonia, NH3 with hydrobromic acid, HBr. Label the acid, the base, the conjugate acid, and the conjugate base.

Answer 1

By definition an acid will donate its hydrogen and the base will accept the hydrogen. HBr is your acid and NH₃ is your base. When NH₃ gains a hydrogen it becomes ammonia, NH₄⁺. When HBr loses a hydrogen it becomes Br^-.

NH₃ + HBr --> NH₄⁺ + Br^-

Your conjugate acid and conjugate base will always be on the product (right) side of the equation. The conjugate acid is the product that gained a hydrogen and the conjugate base is the product that lost a hydrogen. In this case, NH₄⁺ would be your conjugate acid and Br^- would be your conjugate base. I hope this helps!