Question

what happens when potassium oxide is dissolved in water

Answer 1

What is the reaction when potassium hydroxide and water are combined?
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SubhashD Shimpukade
SubhashD Shimpukade, Advocate Pune
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Veerasamy Natarajan
Veerasamy Natarajan, Graduate Chemistry, University of Madras (1973)
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Lex Vroling
Lex Vroling, Former chemistry teacher with 23 years experience at pre university level
Answered Jul 22
Potassium hydroxide is a solid that consists of a regular lattice where potassium-ions (K+) are surrounded by hydroxide-ions (OH-) and the other way around. The attraction between the positive and negative ions keeps them in place.

When brought in contact with water, water molecules, being dipoles, are attracted to the potassium- and hydroxide-ions on the outside of the solid, and start pulling them out of the lattice and surround the completely.

Thus the K+ ions and OH- ions are hydrated. The mutual attraction between the water molecules and the potassium-ions, and the water molecules and the hydroxide-ions is larger than the mutual attraction between the potassium-ions and hydroxide-ions. Therefore a lot of heat is produced during the solution process.

Since both the solid and the solution contain K+ and OH- ions, there is no chemical change. This goes as well for the water molecules: they stay water molecules. So here’s no chemical change either.

Thus the dissolution process is not considered a chemical reaction.

It is easily reversed: apply heat so that the water evaporates and the K+ and OH- ions will rearrange again in a regular lattice as a solid.
So no reaction will take place
Hope it will helpful

Answer 2

K2O+H2O=explosive reaction