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
View Solution FreeMore Electrochemistry Questions
Which of the following molecules can act as an oxidizing as well as a reducing agent ?...A current of 9.95 amp following for 10 minutes, deposits 3 gm of a metal. Equivalent weight of the metal is...A solution containing one mole per litre of each Cu(NO3)2, AgNO3, Hg2 (NO3)2 is being electrolysed by using inert electr...When molten ICI3 is electrolysed using platinum electrodes...Four colourless salt solutions are placed in separate test tubes and a strip of copper is placed in each. Which solution...