3.5 - Cell EMF and Gibbs Free Energy
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is the formula to calculate EMF?
💡 Hint: Think about the differences in electrode potentials.
What does a negative ΔG indicate?
💡 Hint: Recall what spontaneous means in thermodynamics.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the equation ΔG = -nFE represent?
💡 Hint: Think about energy transformations.
True or False: A positive EMF indicates a spontaneous reaction.
💡 Hint: Recall our discussions about spontaneity.
1 more question available
Challenge Problems
Push your limits with advanced challenges
In an electrochemical cell, the cathode potential is 1.23 V, and the anode potential is 0.34 V. Calculate the EMF and assess the spontaneity of the reaction.
💡 Hint: Recall the formula for calculating EMF.
If 4 moles of electrons are transferred in a redox reaction with an EMF of 0.75 V, calculate the Gibbs free energy change.
💡 Hint: Use the provided values in the Gibbs energy equation.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.