chemistry simple themisd published on September 18, 2010161 responses 2 3.7★ / 5 Questions in vertical order Why is H+ sometimes written as H3O+ in equations? h+h If a free hydrogen ion encounters a water molecule, it attacks the unshared electron pairs on the oxygen in the water molecule and forms a hydronium ion, H3O+. The chemical bond that forms between the water and hydrogen ion is covalent and very strong. In an aqueous solution, essentially all of the H+ exists as H3O+. I don't know What are everyday applications for the chloride solubility rule? Type answer (8 letters) How should the reaction between vinegar and baking soda be classified? A double displacement reaction (also called a double decomposition or metathesis reaction) has the form AB + CD AC + BD other!