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Na-amalgam is prepared by electrolysis o...

Na-amalgam is prepared by electrolysis of `NaCl` solution using liquid Hg as cathode. How long should the current of 10 amp. Is passed to produce `10%` Na-Hg on a cathode of 10 gm Hg. (atomic mass of `Na=23`).
(A). 7.77 min
(B). 9.44 min.
(C). 5.24 min.
(D). 11.39 min

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