Very pure hydrogen -99-9- can be made by which of the following processes-Reaction of methane with steamMixing natural hydrocarbons of high molecular weightReaction of salt like hydrides with waterElectrolysis of water

Question

Toppr Admin · Accepted Answer

Pure hydrogen can be obtained from the electrolysis of water.

Cathode (reduction): $2 H_{2} O_{(l)} + 2 e^{-} \to H_{2 (g)} + 2 O H_{(a q)}^{-}$

Anode (oxidation): $4 O H_{(a q)}^{-} \to O_{2 (g)} + 2 H_{2} O_{(l)} + 4 e^{-}$

Combining either half reaction pair yields the same overall decomposition of water into oxygen and hydrogen:

Overall reaction: $2 H_{2} O_{(l)} \to 2 H_{2 (g)} + O_{2 (g)}$

The number of hydrogen molecules produced is thus twice the number of oxygen molecules.

Very pure hydrogen (99.9%) can be made by which of the following processes?Reaction of methane with steamMixing natural hydrocarbons of high molecular weightReaction of salt like hydrides with waterElectrolysis of water

Very pure hydrogen $(99.9 %)$ can be made by which of the following processes?
Reaction of methane with steam
Mixing natural hydrocarbons of high molecular weight
Reaction of salt like hydrides with water
Electrolysis of water