# What is the "conjugate base" of water?

##### 1 Answer
Feb 17, 2017

$\text{Hydroxide anion, } H {O}^{-}$

#### Explanation:

To find the conjugate base of any species, simply remove a proton, ${H}^{+}$ from the parent acid, and conserve mass and charge:

${H}_{2} O \rightarrow H {O}^{-} + {H}^{+}$

For the conjugate acid, simply add a proton:

${H}_{2} O + {H}^{+} \rightarrow {H}_{3} {O}^{+}$

What is the conjugate base of $\text{hydroxide anion, } H {O}^{-}$? Simply follow the same procedure as before.