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
When an electric current is passed through an aqueous solution of the following, the concentrations of cation as well as...Which of the following statements is true for an electrochemical cell of Cu-H2....The cell Pt (H2) (1 atm) | (pH = ?) || (a = 1) | AgI(s), Ag has emf, E298K = 0. The standard electrode potential for the...Equal volumes of 0.015 M – CH3COOH and 0.015 M – NaOH solutions are mixed together. What would be the molar conductivity...How many electrons flow when a current of 5 A is passed through a solution for 200 s?...