# What is the chemical equation for potassium oxide + water ---> potassium hydroxide?

May 13, 2014

$\text{K"_2"O" + "H"_2"O" -> 2"KOH}$

#### Explanation:

Potassium oxide + water produces potassium hydroxide.

Potassium oxide is an ionic compound. The potassium has a charge of ${\text{K}}^{+}$ and oxygen has a charge of ${\text{O}}^{2 -}$. We need 2 potassium ions to balance one oxide ion making the formula $\text{K"_2"O}$.

Potassium hydroxide is an ionic compound. The potassium has a charge of ${\text{K}}^{+}$ and hydroxide has a charge of ${\text{OH}}^{-}$. We need 1 potassium ion to balance one hydroxide ion making the formula $\text{KOH}$.

$\text{K"_2"O" +" H"_2"O" -> "KOH}$

To balance the equation we place a coefficient of 2 in front of the potassium hydroxide.

$\text{K"_2"O" + "H"_2"O" -> 2"KOH}$