Which of the substance, Na, Hg, S, Pt and graphite, can be used as electrodes in electrolytic cells having aqueous solution?

Question

Which of the substance, Na, Hg, S, Pt and graphite, can be used as electrodes in electrolytic cells having aqueous solution? (A) Hg, Pt and graphite (B) Na, S and Hg (C) Pt and graphite only (D) Na and S only

Tardigrade Admin · Accepted Answer

Hg (mercury), Pt and graphite can be used as electrodes in the electrolytic cell having aqueous solution as they are inert towards water. Sodium and sulphur react with water, hence, cannot be used.

Q. Which of the substance, Na, Hg, S, Pt and graphite, can be used as electrodes in electrolytic cells having aqueous solution?

Hg, Pt and graphite

Na, S and Hg

Pt and graphite only

Na and S only

Hg (mercury), Pt and graphite can be used as electrodes in the electrolytic cell having aqueous solution as they are inert towards water. Sodium and sulphur react with water, hence, cannot be used.