Question

1)A voltaic cell is constructed in which the anode is a I^-|I₂ half cell and the cathode is a Cl^-|Cl₂ half cell. The half-cell compartments are connected by a salt bridge.

(Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank.)

The anode reaction is:

The cathode reaction is:

The net cell reaction is:

In the external circuit, electrons migrate _____the I^-|I₂ electrode ____ the Cl^-|Cl₂ electrode.

In the salt bridge, anions migrate ____ the I^-|I₂ compartment ____the Cl^-|Cl₂ compartment

Answer 1

The representation of the given voltaic cell I^-|I₂ || Cl₂|Cl^-. Now, oxidation occurs at anode and reduction occurs at cathode. Therefore, the anode reaction: 2I^- (aq) + 2e^- → I₂ (g). The cathode reaction: Cl₂ (aq)+ 2e^- → 2Cl^- (aq). Therefore, the net cell reaction: 2I^- (aq) + Cl₂ (g) → I₂ (g) + 2Cl^- (aq). Electrons migrate from the anode to the cathode. Thus, in external circuit, electrons migrate from the I electrode to the Cl electrode. Salt bridge: As we know the electrons flow from the anode to the cathode.