A voltaic cell is constructed in which the anode is a Cr 2+ | Cr 3+ half cell an

Question

A voltaic cell is constructed in which the anode is a Cr2+|Cr3+ half cell and the cathode is a Ag|Ag+ 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 _____(from)(to) the Ag|Ag+ electrode _____(from)(to) the Cr2+|Cr3+ electrode.

In the salt bridge, anions migrate _____(from)(to) the Ag|Ag+ compartment _____(from)(to) the Cr2+|Cr3+ compartment.

Explanation / Answer

In external circuit electrons flow from cathode to anode.i.e from Ag/Ag+ to Cr+2 to Cr+3.

In the salt bridge electrons migrate from anode to cathode.i.e from Cr+2/Cr+3 to Ag+/Ag+2.

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