A galvanic cell is constructed from the following half cells, at 25°C.

The half cells are connected with a salt bridge and the electrodes are joined by a wire.

Which one of the following is likely to occur?
A. The copper electrode will increase in mass.
B. Bubbles of gas will form at the copper electrode.
C. The concentration of silver ions in solution will increase.
D. The blue colour of the copper (II) chloride solution will become more intense.
Solution
When the current is flowing
A. the anode is positive and the cathode is negative.
B. an oxidation reaction occurs at the positive electrode.
C. anions in the salt bridge move towards the negative electrode.
D. electrons travel in the external circuit from the cathode to the anode
Solution