ElectrochemistryHard
Question
Zn Amalgam is prepared by electrolysis of aqueous ZnCl2 using Hg cathode (9gm). How much current is to be passed through ZnCl2 solution for 1000 seconds to prepare a Zn Amalgam with 25% Zn by wt. (Zn = 65.4)
Options
A.5.6 amp
B.7.2 amp
C.8.85 amp
D.11.2 amp
Solution
Let x gm of Zn deposit on 9 gm of Hg
% of Zn in Amalgam =
x 100 = 25
∴ x = 3gm
Eq. of Zn =
Current = x
= 8.85 amp.
% of Zn in Amalgam =
x 100 = 25∴ x = 3gm
Eq. of Zn =
Current = x
= 8.85 amp. Create a free account to view solution
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