Question

Pure hydrogen is obtained by carrying electrolys is of

• A. water containing $H_2SO_4$
• B. water containing $NaOH$
• C. $BaOH_2$ solution
• D. KOH solution

Answer 1

Answer: (C)

$BaOH_2$ solution

Answer 2

Pure hydrogen is obtained by the electrolysis of $Ba(OH)_2$ solution in a U-tube using nickel electrode. The gas is liberated at the cathode and is passed over heated platinum gauze to remove oxygen if present as impurity