#2 of 5 hotels in Chenonceaux. â 1  Best romantic chateau of the Loire Valley 2  â. Roseraie hotel is really close to the Chateau. 3  November 27, 2016.
A hydronium ion is formed when a positively charged hydrogen ion bonds with a molecule of water through a coordinate covalent bond. In this coordinate covalent bond, the oxygen from the water... A hydronium ion is formed when a positively charged hydrogen ion bonds with a molecule of water through a coordinate covalent bond.
When an Arrhenius acid is in water, the acid releases hydrogen ions (H+), which are protons, in water, so it protonates water. When water is protonated, it results in the production of hydronium (H3O+) ions. In the chemical equation shown, it shows that the Arrhenius acid, HCl, protonates water (H2O).