👉 In the context of chemistry, perhydrogenation refers to a chemical reaction where two hydrogen atoms combine with one oxygen atom to form water (H2O). This type of reaction is also known as dehydrogenation. The process involves the addition of an electron pair from the oxygen atom to the hydrogen atom in order to produce water. The term "perhydrogenation" was coined by chemist David H. G. Blythe and was first used in a 193