Question

What is Hydronium ion?
How is it formed?

Answer 1

H+ ions are called hydronium ion.

And there are many ways that through which they could form and one of them is simple decomposition reaction taking place in case of water.

Answer 2

the hydrogen ion bonded to a molecule of water, H 3 O +, the form in which hydrogen ions are found in aqueous solution. Expand. Also called oxonium ion. Origin of hydronium ion.


It can be formed when an acid is present in water or simply in pure water. It's chemical formula is H 3 O + . It can also be formed by the combination of a H+ ion with an H 2 O molecule. The hydronium ion has a trigonal pyramidal geometry and is composed of three hydrogen atoms and one oxygen atom.

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