Question

Is the reaction of warm aqueous barium hydroxide solution between Nickel electrodes?

Answer 1

Answer:

Pure hydrogen gas can be prepared by the electrolysis of warm solution of barium hydroxide using platinum or nickel ...

Explanation:

Pure hydrogen gas can be prepared by the electrolysis of warm solution of barium hydroxide using platinum or nickel electrodes. As water does not conduct electricity very well, so it is usual to electrolyse aqueous solution of barium hydroxide. The gases produced in the anode and cathode compartment must be kept separate. Following reactions occur at anode and cathode.

Anode

2OH - --------> H 2 O + ½ O 2 + 2e-

Cathode

2H 2 O + 2e- -----> 2OH - + H 2

overall reaction being

H 2 O --------> H 2 + 1/2 O 2

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