[big]

What is the conjugate acid of NH₄⁺ in the reaction

NH₄⁺+OH^- H₂O +NH₃

A) NH₂^-
B) NH₃
C) OH^-
D) H₂O

Am I going crazy in that NH₄⁺ itself *is* an acid, and so it only has a conjugate base and not a conjugate acid and none of the answers are right, or did I learn the definition of conjugate acids and bases wrong?

Thanks so much!

[Dan]

Am I going crazy in that NH₄⁺ itself *is* an acid, and so it only has a conjugate base and not a conjugate acid and none of the answers are right,

You're not crazy, you're correct. The question is probably supposed to be "what is the conjugate base..."