Electrochemical Cells Quiz

What is a galvanic cell and how does it work?

• A galvanic cell is a device that converts mechanical energy into electrical energy.

• A galvanic cell is a type of fuel cell that uses hydrogen as the fuel to generate electricity.

• A galvanic cell is an electrochemical cell that generates electrical energy from non-spontaneous chemical reactions.

• A galvanic cell is an electrochemical cell that generates electrical energy from spontaneous chemical reactions.

What are the differences between galvanic cells and electrolytic cells?

• Galvanic cells convert electrical energy into chemical energy, while electrolytic cells convert chemical energy into electrical energy.

• Galvanic cells convert chemical energy into electrical energy, while electrolytic cells use electrical energy to drive a non-spontaneous chemical reaction.

• Galvanic cells use electrical energy to drive a non-spontaneous chemical reaction, while electrolytic cells convert chemical energy into electrical energy.

• Galvanic cells and electrolytic cells both convert chemical energy into electrical energy.

Calculate the cell potential for a galvanic cell with a standard electrode potential of E cathode=+0.80V and E anode-0.60V.[Given values are reduction Potentials]

• -0.20V

• 2.40V

• 0.20V

• 1.40V

What is the standard electrode potential for cathode of a galvanic cell with a cell potential of 1.23V and an E_M|M+ 0.80V?

• 0.43V

• 2.03V

• 0.63V

• 1.03V

Metal(X) | salt (X)| ions(X) || ions(Y) | salt(Y) | Metal(Y)

X=LHS Y=RHS

• X=Cathode

  Y=Anode

• X=Anode

  Y=Cathode

• X=Cathode

  Y=Anode

• X=Anode

  Y=Anode

The correct match among the following is:

• Cathode=Reduction

  Anode=Reduction

• Cathode=Reduction

  Anode=Oxidation

• Cathode=Oxidation

  Anode=Oxidation

• Cathode=Oxidation

  Anode=Reduction

Cr²⁺ + 2e- ------->Cr

The above reaction is an example of_________reaction which takes place at ____________.

• Reduction, Anode

• Reduction,Cathode

• Oxidation, Anode

• Oxidation, Cathode

The Standard Cell potential of an electrochemical cell (in V)

Cu|Cu²⁺||Ag⁺|Ag

Given: E⁰ _Cu²⁺|Cu=0.337V and E⁰ _Ag⁺|Ag=0.80V

For the reaction to be spontaneous Change in Gibbs Free Energy(G) and E_cell should be ______ & __________ respectively

• Positive and Negative

• Negative and positive

• Negtive and negative

• Positive and positive

Pt,H₂(1atm) | HCl (1.0M)

For the above cell at 298K E⁰ =___V