# How to balance equations in acidic solutions?

Jul 2, 2018

You mean how to balance redox equations in acidic conditions...?

#### Explanation:

We assume that the protium ion, i.e. ${H}^{+}$, or ${H}_{3} {O}^{+}$ is the oxidant....i.e. it is reduced to dihydrogen gas...

${H}^{+} + {e}^{-} \rightarrow \frac{1}{2} {H}_{2} \left(g\right)$

ELSE...

${H}_{3} {O}^{+} + {e}^{-} \rightarrow \frac{1}{2} {H}_{2} \left(g\right) + {H}_{2} O \left(l\right)$

Both ${H}^{+}$, and ${H}_{3} {O}^{+}$ are conceptions, representations if you like of the acid principle in aqueous solution.