Electrochemical Cells | MCQs

Explanation

In a complete cell diagram, a double vertical line (||) represents the salt bridge.

It allows ion flow to maintain electrical neutrality.

Explanation

In a Daniell cell, the following is used as a cathode:

• Copper (Cu): The copper electrode is reduced and gains electrons to form copper atoms.
• The half-reaction is: Cu2+(aq) + 2e- → Cu(s)

Explanation

 A NiCad (Nickel-Cadmium) battery has a nickel oxide hydroxide (NiO2) cathode and a cadmium anode. 

Explanation

When a chemical cell's voltage drops to zero, it typically indicates that the cell reaction has reached equilibrium.