Enter electrons as e–. |
Use smallest possible integer coefficients for ALL reactions. |
If a box is not needed, leave it blank. |
A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge.
Br2(l) + 2Fe2+(aq) 2Br–(aq) + 2Fe3+(aq)
The anode reaction is:
+ | + |
The cathode reaction is:
+ | + |
In the external circuit, electrons migrate _____fromto the Br–|Br2 electrode _____fromto the Fe2+|Fe3+ electrode.
In the salt bridge, anions migrate _____fromto the Fe2+|Fe3+ compartment _____fromto the Br–|Br2 compartment.
A voltaic cell is constructed from a standard Zn2+ | Zn half cell (E°red = -0.763 V) and a standard I2 | I– half cell (E°red = 0.535 V).
(For all reactions below, use the smallest possible integer coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed leave it blank. Enter electrons as .)
The anode reaction is:
+ | + |
The cathode reaction is:
+ | + |
The spontaneous cell reaction is:
+ | + |
The cell voltage is_______ V.
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