Cell Potential and Gibbs Free Energy

This video tutorial explores the relationship between cell potential and Gibbs free energy, providing a step-by-step guide to calculating Gibbs free energy using cell potential. It discusses the signs of cell potential and Gibbs free energy in spontaneous and non-spontaneous reactions, as well as at equilibrium. The video also covers the use of standard reduction potentials to determine cell potential and Gibbs free energy, and demonstrates how to calculate the cell potential for a hypothetical reaction.

What is the formula used to relate Gibbs free energy and cell potential?

• ΔG = E/nF

• ΔG = nF/E

• ΔG = -nFE

• ΔG = nFE

How many moles of electrons are involved in the example reaction discussed in the video?

• 1 mole

• 2 moles

• 3 moles

• 4 moles

What is the unit of Gibbs free energy after conversion from joules?

• Calories

• Kilojoules

• Watts

• Volts

For a spontaneous reaction, what is the sign of the cell potential?

• Negative

• Zero

• Undefined

• Positive

What happens to the cell potential when a reaction is reversed?

• It becomes zero

• It doubles

• It changes sign

• It remains the same

How many electrons are involved in the balanced reaction for the example using standard reduction potentials?

• 8 electrons

• 6 electrons

• 4 electrons

• 2 electrons

What is the overall cell potential for the reaction discussed using standard reduction potentials?

• 3 volts

• 2 volts

• 2.5 volts

• 1.5 volts

In the hypothetical reaction, how many electrons are needed to balance the first half-reaction?

• 5 electrons

• 4 electrons

• 3 electrons

• 2 electrons

What is the cell potential calculated for the hypothetical reaction?

• 0.102 volts

• 0.202 volts

• 0.302 volts

• 0.402 volts

What is the value of Faraday's constant used in the calculations?

• 96,485 C/mol

• 98,485 C/mol

• 94,485 C/mol

• 92,485 C/mol