Very pure hydrogen (99.9%) can be made by which of the following process?

Options

A. Electolysis of water
B. Reaction of salt like hydrides with water
C. Reaction of methane with steam
D. Mixing natural hydrocarbons of high molecular weight.

Answer

A

Explanation

Electrolytic `H_(2)` is the purest commercially avaible grade of `H_(2)` and is made bt the electrolysis of `H_(2)O.`
`2H_(2)O to 2H_(2)(g) + O_(2) (g)`
Pure `H_(2)` is the prepared by using Ni electrode of warm `Ba(OH) _(2)` solution . Gases obatined is passed
over hot Pt gauze which oxidizes any resdidenrt gas and it is then barpassing gas over KOlf pellets
and pure powder of `P_(4)O_(10).`