Answer
OH$^-$, S$^{2-}$, Br$^-$, PH$_3$, CH$_3$O$^-$
Work Step by Step
The conjugate base is the acid minus a hydrogen atom.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.