Question 17.3: When chlorine gas is bubbled through an aqueous solution of ...
When chlorine gas is bubbled through an aqueous solution of NaBr, chloride ions and liquid bromine are the products of the spontaneous reaction.
(a) Draw a sketch of the cell, labeling the anode, the cathode, and the direction of electron flow.
(b) Write the half-reaction that takes place at the anode and at the cathode.
(c) Write a balanced equation for the cell reaction.
(d) Write an abbreviated notation for the cell.
STRATEGY
1. Split the equation into two half-reactions.
2. Recall that the anode
■ is where oxidation takes place.
■ is the electrode toward which anions move.
■ is where electrons are produced.
3. The cathode
■ is where reduction takes place.
■ is the electrode toward which cations move.
■ is where electrons are released by the anode through an external circuit.
