Enter electrons as e. A voltaic cell is constructed in which the anode is a CriC
ID: 1045792 • Letter: E
Question
Enter electrons as e. A voltaic cell is constructed in which the anode is a CriCr+half cell and the cathode is a FelFe2t 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 migratethe Cr/Cr3 electrodethe Fe[Fe3+ electrode In the salt bridge, anions migrate the CriCr+ compartmentthe Fe|Fe2+ compartment. Prevlous NextExplanation / Answer
The anode reaction :
Cr (s) ------------> Cr3+ (aq.) + 3 e-
The cathode reaction :
Fe2+ (aq.) + 2 e- ------------> Fe (s)
The net cell reaction :
2 Cr (s) + 3 Fe2+ (aq.) -----------> 2 Cr3+ (aq.) + 3 Fe (s)
In the external circuit electrons migrate from the Cr/Cr3+ electrode to the Fe/Fe2+ electrode.
In the salt bridge, anions migrate to the Cr/Cr3+ compartment from the Fe/Fe2+
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