MEDIUM
12th Maharashtra Board
IMPORTANT
Earn 100

It is impossible to measure the potential of a single electrode. Comment.

Important Questions on Electrochemistry

HARD
12th Maharashtra Board
IMPORTANT
Chemistry Standard 12>Chapter 5 - Electrochemistry>Exercises>Q 3
Why do the cell potential of lead accumulators decrease when it generates electricity? How the cell potential can be increased?
HARD
12th Maharashtra Board
IMPORTANT
Chemistry Standard 12>Chapter 5 - Electrochemistry>Exercises>Q 3
Why do the cell potential of lead accumulators decrease when it generates electricity? How the cell potential can be increased?
HARD
12th Maharashtra Board
IMPORTANT
Chemistry Standard 12>Chapter 5 - Electrochemistry>Exercises>Q 3
Write the electrode reactions and net cell reaction in NICAD battery.
HARD
12th Maharashtra Board
IMPORTANT
Chemistry Standard 12>Chapter 5 - Electrochemistry>Exercises>Q 4
What is Kohlrausch law of independent migration of ions? How is it useful in obtaining molar conductivity at zero concentration of a weak electrolyte? Explain with an example.
HARD
12th Maharashtra Board
IMPORTANT
Chemistry Standard 12>Chapter 5 - Electrochemistry>Exercises>Q 4
Explain electrolysis of molten NaCl.
HARD
12th Maharashtra Board
IMPORTANT
Chemistry Standard 12>Chapter 5 - Electrochemistry>Exercises>Q 4
What current strength in amperes will be required to produce 2.4 g of Cu from CuSO4 solution in 1 hour? Molar mass of Cu=63.5 g mol-1. 
MEDIUM
12th Maharashtra Board
IMPORTANT
Chemistry Standard 12>Chapter 5 - Electrochemistry>Exercises>Q 4
Equilibrium constant of the reaction, 2Cu⊕(aq)⟶Cu2⊕(aq)+Cu(s) is 1.2×106. What is the standard potential of the cell in which the reaction takes place?  
 
MEDIUM
12th Maharashtra Board
IMPORTANT
Chemistry Standard 12>Chapter 5 - Electrochemistry>Exercises>Q 4

Calculate emf of the cell

Zn(s)Zn2⊕(0.2M)H⊕(1.6M)H2(g,1.8 atm)∣Pt at 25°C