Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
What occurs at the cathode during electrolysis?
What occurs at the cathode during electrolysis?
- Cations gain electrons and become neutral. (correct)
- Cations lose electrons and become positive.
- Anions gain electrons and become neutral.
- Electrons are released into the solution.
Why must the ionic compound be molten or dissolved for electrolysis to occur?
Why must the ionic compound be molten or dissolved for electrolysis to occur?
- To ensure that the ions can move freely. (correct)
- To prevent the discharge of any ions.
- To allow ions to be fixed in place.
- To enhance the conductivity of the Solid.
In the half equation 2Cl- → Cl₂ + 2e-, what type of reaction is taking place?
In the half equation 2Cl- → Cl₂ + 2e-, what type of reaction is taking place?
- Reduction of chlorine ions.
- Loss of electrons by chloride ions. (correct)
- Discharge of electrons into the solution.
- Formation of negative ions.
Which half equation demonstrates a reduction reaction?
Which half equation demonstrates a reduction reaction?
Signup and view all the answers
Study Notes
Electrolysis
- Electrolysis is the process of using electricity to break down ionic compounds.
- Positive ions (cations) are attracted to the negative electrode (cathode).
- Negative ions (anions) are attracted to the positive electrode (anode).
- At the electrodes, ions gain or lose electrons to become neutral atoms, a process called discharge.
- The compound to be electrolyzed must be in a molten or dissolved state, allowing ions to move freely.
Half Equations
- Half equations represent the chemical reactions occurring at each electrode.
- Reduction half equations show the gain of electrons by cations.
- Examples of reduction half equations include:
- Mg+2 + 2e- → Mg
- Na+ + e- → Na
- Al+3 + 3e- →Al
- 2H- + 2e- → H2
- Oxidation half equations show the loss of electrons by anions.
- Examples of oxidation half equations include:
- 2Cl- →Cl₂ + 2e-
- 2Br- →Br2 + 2e-
- 2I- →I2 + 2e-
- 4 0H- → 2H20+ 02 + 4e-
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on the process of electrolysis, including ion movement, electrode reactions, and half equations. Understand how cations and anions interact at the cathode and anode. This quiz will challenge your grasp of these fundamental concepts in chemistry.
