A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge. 2Cr3+(aq) + 3Mg(s)  2Cr(s) + 3Mg2+(aq) The anode reaction is:     +              +     The cathode reaction is:     +              +     In the external circuit, electrons migrate  (to/from)________   the Cr|Cr3+ electrode (to/from)____________   the Mg|Mg2+ electrode. In the salt bridge, anions migrate (to/from) __________  the Cr|Cr3+ compartment (to/from) ________________  the Mg|Mg2+ compartment.

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A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge.

2Cr3+(aq) + 3Mg(s)  2Cr(s) + 3Mg2+(aq)

The anode reaction is:

    +              +    



The cathode reaction is:

    +              +    




In the external circuit, electrons migrate  (to/from)________   the Cr|Cr3+ electrode (to/from)____________   the Mg|Mg2+ electrode.

In the salt bridge, anions migrate (to/from) __________  the Cr|Cr3+ compartment (to/from) ________________  the Mg|Mg2+ compartment.

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