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

##"K"_2"O" + "H"_2"O" -> 2"KOH"##

Potassium oxide + water produces potassium hydroxide.

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

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

##"K"_2"O" +" H"_2"O" -> "KOH"##

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

##"K"_2"O" + "H"_2"O" -> 2"KOH"##

I hope this was helpful. SMARTERTEACHER