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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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Na-Amalgam is prepared by electrolysis of aq. NaCI solution using 10gm Hg cathode. How many Faraday's of electricity is required to prepare 18.7% Na-Amalgam (current Eff = 50%)

Cadmium amalgam is prepared by electrolysis of a solution of CdCl_(2) using a mercury cathode. Find how long a current of 5 ampere should be passed in order to prepare 12% Cd-Hg amalgam on a cathode of 2 g mercury. At mass of Cd=112.40.

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Knowledge Check

  • 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 10gm Hg . ( atomic mass of Na=23) .

    A
    `7.77 `min
    B
    `9.44` min.
    C
    `5.24 mi n.`
    D
    `11.39 mi n`.

  • Cadmium amalgam is prepared by electrolysis of a sodium of CdCl_2 using a mercury cathode. How long should a current of 4 A be passed in order to prepare 10% by mass Cd in Cd-Hg amalgam on cathode of 4.5 g Hg? (atomic mass of Cd=112)

    A
    400sec
    B
    215.40 sec
    C
    861.6 sec
    D
    4308.8 sec

  • Na-Amalgam is prepared by electrolysis of aq. NaCI solution using 10gm Hg cathode. How many Faraday's of electricity is required to prepare 18.7% Na-Amalgam (current Eff = 50%)

    A
    `0.081`
    B
    `0.16F`s
    C
    `0.2F`s
    D
    `0.1F`