Practice Summary Of Key Concepts (5) - Unit 9: Redox Processes

Practise this section

9 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define oxidation in the context of redox reactions.
Show hintHide hint
Think about what happens to the charge during oxidation.
Question 2.
What is a galvanic cell?
Show hintHide hint
Consider how these cells are structured.
3Question 3.
What is oxidation?
- Gain of electrons
- Loss of electrons
- Neither
Show hintHide hint
Think about what happens to the charge during oxidation.
4Question 4.
True or False: In a galvanic cell, oxidation occurs at the cathode.
- True
- False
Show hintHide hint
Recall the functions of anodes and cathodes in redox reactions.
Question 5.
Given the reaction 2MnO4− + 5Fe^2+ + 16H+ → 2Mn^2+ + 5Fe^3+ + 8H2O, identify and explain the oxidizing and reducing agents.
Show hintHide hint
Assign oxidation states to each species to find which undergoes oxidation and which undergoes reduction.
Question 6.
Calculate the change in Gibbs free energy for a galvanic cell with an E°cell of 0.86 V, carrying n = 2 electrons.
Show hintHide hint
Use the values of n, F (Faraday constant), and E°cell to find ΔG°.

5 more questions in this section. Enroll free to practise them all.