For the cell
Fe(s)©¦Fe2+(aq)¨UO2(g)©¦H+(aq), H2O(l)©¦Pt(s)
Indicate
a) standard cell potential; b) overall cell reaction c) number of electrons transferred
Look up Eo values for Fe==>Fe^2+ + 2e (as an oxidation)
and O2 + 4H^+ 4e ==> 2H2O (as a reduction)
and add them together. Check these reactions; I assume these go that way. Ad the oxidation half and the reduction half to obtain the cell potential. As written, it will be negative.
b)The overall cell reaction, as drawn/written, will the sum of the two half reactions; however, you will need to multiply the Fe half cell by 2 to make the electrons equal.
c) The electrons transferred = 4.
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To determine the standard cell potential, overall cell reaction, and number of electrons transferred for the given cell reaction Fe(s) | Fe2+(aq) || UO2(g) | H+(aq), H2O(l) | Pt(s), you need to follow these steps:
Step 1: Identify the half-reactions
The cell reaction consists of two half-reactions: Fe(s) | Fe2+(aq) and UO2(g) | H+(aq). Each half-reaction involves the gain or loss of electrons.
Step 2: Balance the half-reactions
For the Fe half-reaction, Fe(s) | Fe2+(aq), there is no need for balancing because it is already balanced.
For the UO2 half-reaction, UO2(g) | H+(aq), you need to balance the reaction to ensure that the number of atoms on each side is the same.
Step 3: Determine the number of electrons transferred
The number of electrons transferred is equal to the coefficient in front of the electron in the balanced half-reactions.
Step 4: Write the overall cell reaction
The overall cell reaction is the combination of the two half-reactions with the electrons canceled.
Step 5: Calculate the standard cell potential
The standard cell potential (E°cell) can be calculated by subtracting the standard reduction potential of the half-reaction at the cathode from the standard reduction potential of the half-reaction at the anode.
Now let's work through these steps for your given cell reaction:
a) Standard cell potential:
To determine the standard cell potential, you need the reduction potentials for the half-reactions involved. Please provide those values.
b) Overall cell reaction:
To write the overall cell reaction, you need to balance the half-reactions. Please provide the balanced half-reactions.
c) Number of electrons transferred:
The number of electrons transferred can be determined by looking at the coefficients in front of the electrons in the balanced half-reactions. Again, please provide the balanced half-reactions.