Question

The highly pure hydrogen is obtained when?

• A. Water gas shift reaction
• B. Lane's process
• C. Electrolysed with barium hydroxide solution
• D. Hydrogen sulfate is reacted with zinc

Answer 1

The correct option is C Electrolysed with barium hydroxide solution

Highly pure dihydrogen $\left(H_2\right)$ that is greater than 99.95% is obtained by electrolysis in warm aqueous barium hydroxide $\left(Ba\right(OH{)}_2\left(aq\right))$ solution between Nickel electrodes (Ni). This is one of the processes of commerical production of hydrogen.