Electrochemistry Practice

8 problems · instant feedback · full explanations

Electrochemistry connects redox reactions to electricity. These eight problems cover cell notation concepts, standard cell potentials, the Nernst equation, and galvanic versus electrolytic cells.

Q1.
For the Zn-Cu galvanic cell, E(Cu2+/Cu) = +0.34 V and E(Zn2+/Zn) = -0.76 V. Calculate the standard cell potential.

Numerical answer (V) · Medium

Q2.
Oxidation occurs at the:

Multiple choice · Beginner

Q3.
In a galvanic cell, electrons flow from the anode to the cathode through the external circuit.

True / False · Easy

Q4.
The purpose of a salt bridge is to:

Multiple choice · Easy

Q5.
Use the Nernst equation at 25 C: E = E - (0.0592/n) log Q. For the Zn-Cu cell with n = 2, E = 1.10 V, and Q = 10, find E.

Numerical answer (V) · Hard

Q6.
A positive standard cell potential indicates the redox reaction is:

Multiple choice · Easy

Q7.
An electrolytic cell uses electrical energy to drive a nonspontaneous reaction.

True / False · Easy

Q8.
In a galvanic cell, the cathode is the:

Multiple choice · Medium

Electrochemistry Practice

Q1. For the Zn-Cu galvanic cell, E(Cu2+/Cu) = +0.34 V and E(Zn2+/Zn) = -0.76 V. Calculate the standard cell potential.

Q2. Oxidation occurs at the:

Q3. In a galvanic cell, electrons flow from the anode to the cathode through the external circuit.

Q4. The purpose of a salt bridge is to:

Q5. Use the Nernst equation at 25 C: E = E - (0.0592/n) log Q. For the Zn-Cu cell with n = 2, E = 1.10 V, and Q = 10, find E.

Q6. A positive standard cell potential indicates the redox reaction is:

Q7. An electrolytic cell uses electrical energy to drive a nonspontaneous reaction.

Q8. In a galvanic cell, the cathode is the: