CBSE Class 12 Chemistry Electrochemistry Worksheet Set C

Read and download free pdf of CBSE Class 12 Chemistry Electrochemistry Worksheet Set C. Download printable Chemistry Class 12 Worksheets in pdf format, CBSE Class 12 Chemistry Unit 3 Electrochemistry Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Chemistry Class 12 Assignments and practice them daily to get better marks in tests and exams for Class 12. Free chapter wise worksheets with answers have been designed by Class 12 teachers as per latest examination pattern

Unit 3 Electrochemistry Chemistry Worksheet for Class 12

Class 12 Chemistry students should refer to the following printable worksheet in Pdf in Class 12. This test paper with questions and solutions for Class 12 Chemistry will be very useful for tests and exams and help you to score better marks

Class 12 Chemistry Unit 3 Electrochemistry Worksheet Pdf

ELECTROCHEMISTRY
 
 
1. What is meant by limiting molar conductivity?
 
2. The E 0 values of Cu and Zn are 0.34V and – 0.76V respectively. Which of the two is a stronger reducing agent?
 
3. Calculate the potential of hydrogen electrode in contact with a solution having pH value 10.
 
4. How many Faradays are required to produce 2.4g of Mg?
 
5. How much charge is needed to oxidize one mole of FeO to Fe2O3?
 
6. Write Nerst equation and calculate the emf of following cell at 298 K:
Mg(s)|Mg2+(0.001 M)||Cu2+ (0.0001 M)|Cu(s) .Given E0 cell= 2.71 V.
 
7. Define and express the relationship between conductivity and molar conductivity for the solution of an electrolyte.
 
8. Electrolytic specific conductance of 0.25M solution of KCl at 250C is 2.56 x 10-2S/cm,calculate the molar conductance.
 
9. Describe the reactions which occur at the electrodes in a fuel cell that causes H2 and O2 to produce electricity.
 
10. How many hours does it take to reduce 3 moles of Fe3+ to Fe2+ with a current of 2 amperes?
 
11. Account for the following:
a) Alkaline medium inhibits the rusting of iron.
b) Iron does not rust even if the zinc coating is broken in a galvanized iron pipe.
 
12. Calculate the time to deposit 1.5 g of silver at cathode when a current of 1.5 A was passed through the solution of AgNO3. (Molar mass of Ag = 108 g mol-1, 1 F = 96500 C mol-1)
 
13. Three electrolytic cells A, B, C containing solutions of ZnSO4, AgNO3 and CuSO4, respectively are connected in series. A steady current of 1.5 amperes was passed through them until 1.45 g of silver deposited at the cathode of cell B. How long did the current flow? What mass of copper and zinc were deposited?
 
14. Conductivity of 0.00241 M acetic acid is 7.896 × 10–5 S cm–1. Calculate its molar conductivity and if λ0 m for acetic acid is 390.5Scm2 mol–1, what is its dissociation constant?
 
15. Calculate the equilibrium constant and ΔG0 for the following reaction at 250C.
Ni(s)+ 2Ag+(aq) → Ni2+(aq) + 2Ag (s),Given that the cell potential at 250C is 1.05V. (1F = 96500 C mol-1)
 
16. What type of a battery is the lead storage battery? Write the anode and cathode reactions and the overall reaction occurring in a lead storage battery when the cell is in use.
 
17. A conductivity cell with cell constant 3cm-1 is filled with 0.1M acetic acid solution. The resistance is found to be 4000 ohms. Find
a] molar conductance of 0.1M acetic acid
b] Degree of dissociation of acetic acid given that Λ0 (CH3COOH) = 400 S cm2 mol-1.
 
18. a) State Kohlrausch’s law of independent migration of ions. Write an expression for the molar conductivity of acetic acid at infinite dilution according to Kohlrausch’s law.
b) Calculate λ0m for acetic acid.
Given that λ0m (HCl) = 426 Scm2mol-1 and
λ0m (CH3COONa) = 91 Scm2mol-1
 
19. Calculate E cell and ΔG for the following reaction. Given ECell = 1.81 V
Al/Al3+ (aq) (10-4M) ||Sn4+(aq)(10-2 M)|Sn2+(aq)(10-2 M)
 
20. Explain the electrochemical theory of rusting.


Please click on below link to download CBSE Class 12 Chemistry Electrochemistry Worksheet Set A

CBSE Class 12 Chemistry Unit 3 Electrochemistry Worksheet

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Worksheet for Chemistry CBSE Class 12 Unit 3 Electrochemistry

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Unit 3 Electrochemistry worksheet Chemistry CBSE Class 12

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Unit 3 Electrochemistry CBSE Class 12 Chemistry Worksheet

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Worksheet for CBSE Chemistry Class 12 Unit 3 Electrochemistry

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