A voltaic cell is constructed in which the anode is a Sn | Sn 2+ half cell and t
ID: 594135 • Letter: A
Question
A voltaic cell is constructed in which the anode is a Sn|Sn2+ half cell and the cathode is a Cu+|Cu2+ 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 _____fromto the Sn|Sn2+electrode _____fromto the Cu+|Cu2+ electrode.
In the salt bridge, anions migrate _____fromto the Sn|Sn2+compartment _____fromto the Cu+|Cu2+ compartment.
The cathode reaction is:
In the external circuit, electrons migrate _____fromto the Mn|Mn2+electrode _____fromto the Br-|Br2 electrode.
In the salt bridge, anions migrate _____fromto the Mn|Mn2+compartment _____fromto the Br-|Br2 compartment.
Explanation / Answer
Sn(s) ---------> Sn^2+ (aq) + 2e^- oxidation
2Cu^2+ (aq) + 2e^- --------> 2Cu^+ (aq) reudtion
-------------------------------------------------------
Sn(s) + 2Cu^2+ (aq) --------> Sn^2+ (aq) +2Cu^+ (aq) over all cell reaction
In the external circuit, electrons migrate anode from to the Sn|Sn2+electrode to cathode the Cu+|Cu2+ electrode.
In the salt bridge, anions migrate cathode from to the Sn|Sn2+compartment anode to the Cu+|Cu2+ compartment.
Mn(s) ------------------>Mn^2+ (aq) + 2e^- at anode oxidation
Br2(g) + 2e^- ---------------> 2Br^- at cathode reduction
-----------------------------------------------------------------------------
Mn(s) + Br2(g) -----------------> Mn^2+ (aq) + 2Br^- over all cell reaction
In the external circuit, electrons migrate anode from to the Mn|Mn2+electrode cathode fromto the Br-|Br2 electrode.
In the salt bridge, anions migrate cathode from to the Mn|Mn2+compartment anode to the Br-|Br2 compartment.
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