1. How many gram of rach metal will be deposited assuming only cathodic reaction in each cell? Exactly 0.6 faraday electric charge is passed through three electrolytic cells in series, first containing AgNO3, second CuSO4 and third FeCl3 solution.
1. How many gram of rach metal will be deposited assuming only cathodic reaction
in each cell? Exactly 0.6 faraday electric charge is passed through three
electrolytic cells in series, first containing AgNO3, second CuSO4 and third FeCl3
solution.
2. Calculate the volume of chlorine gas liberated at the electrode at NTP if the
electric current of 110 ampere is passed through a molten liquid of
sodium chloride for 5 hours and 30 mins.
3. Density of silver is 10.5 g/cm 3 .How long has a current of 4 amperes to be applied
through a solution of silver nitrate to coat a metal surface of 80 cm 2 with 0.005 cm
thick layer?
4. What current strength in ampere will be required to liberate 15 g of chlorine from
sodium chloride solution in one hour and a half?
5. What will be the molarity of the solution at the end of
the molarity of solution if nickel electrodes are used if a current of 3.7 ampere is
passed for 6.5 hours between platinum electrodes in 0.56 litre of a 2 M solution
of Ni(NO 3 ) 2 . (1 F = 96500 coulomb; Ni = 58.7)
6. Consider the reaction,
2Ag + + Cd → 2Ag + Cd 2+
The standard electrode potentials for Ag + --> Ag and Cd 2+ --> Cd couples are 0.80
volt and -0.40 volt, respectively.
(i) What is the standard potential E o for this reaction?
(ii) For the
is negative electrode?
7. What volume of O 2 (g) at 0 o C and 760 mmHg is produced when 6 A of current is passed
through a dilute aqueous solution of KCl for 6 minutes?
8. How long will it take for 1.25 L of a 1.0 M CuSO 4 solution being electrolyzed with a
current of 3.40 A to reach a concentration of 0.25 M?
9. Molecular masses can be determined through electroplating. Determine the molecular
mass and identity of a +2 metal, X, that plates 46.3g of X in 6.75 hours at a current of 2
A.
10. What is the time required to produce 0.15 mol of chlorine gas using 2 A current during
the process of electrolysis of molten NaCl?
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