Answer
Acid-Base
Work Step by Step
We see that $H^+$ and $OH^-$ form $H_2O$, which is the definition of an acid-base reaction.
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.