Electrochemical Cell Concepts

This video tutorial explains the differences between cathodes and anodes, focusing on their roles in reduction and oxidation processes. It discusses the sign conventions for cathodes and anodes in galvanic and electrolytic cells, highlighting how electron flow differs in these systems. The video concludes with a mnemonic to help remember the processes: 'red cat' for reduction at the cathode and 'ox' for oxidation at the anode.

What process occurs at the cathode?

• Oxidation

• Reduction

• De-electronation

• None of the above

Which process is associated with the anode?

• Electronegation

• Reduction

• Oxidation

• Electron gain

In a galvanic cell, what is the charge of the cathode?

• Depends on the electrolyte

• Neutral

• Negative

• Positive

What is the charge of the anode in a galvanic cell?

• Positive

• Negative

• Neutral

• Depends on the electrolyte

In a galvanic cell, electrons flow from:

• Both directions

• Anode to cathode

• Neither direction

• Cathode to anode

In an electrolytic cell, what is the charge of the cathode?

• Depends on the electrolyte

• Neutral

• Negative

• Positive

What is the charge of the anode in an electrolytic cell?

• Positive

• Negative

• Neutral

• Depends on the electrolyte

In an electrolytic cell, electrons are transferred from:

• Cathode to anode

• Neither direction

• Anode to cathode

• Both directions

What mnemonic can help remember the processes at cathode and anode?

• Red cat and ox

• Yellow bird and ox

• Blue dog and fox

• Green frog and box

What does 'red cat' stand for in the mnemonic?

• Reduction at anode

• Reduction at cathode

• Oxidation at cathode

• Oxidation at anode