Q20 · 2020 · Paper 1Unclassified1 mark
QUESTION 20
Determine which of the following statements is true for the electrochemical cell shown.(A) Copper ions are reduced.
(B) Copper is the positive electrode.
(C) Electrons flow through the salt bridge.
(D) Oxidation occurs on the surface of the copper.
WORKED SOLUTION
1 markAnswer D
OFFICIAL ANSWERD
Copper is oxidised at the anode; silver ions are reduced at the cathode. Electrons pass through the external wire.
Correct option from the official QCAA answer key.