1. Calculate the emf generated, Gibbs Free-Energy and the standard Gibbs Free-Energy by the cell in the given notation: Zno IZn m) || H o) Hy) |Pto) When [Zn"] = 4.0 x 10 M, [H] = 0.010 M, [H'] = 1.0 M (ag) %3D

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Chapter18: Electrochemistry
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Problem 83E: Consider a concentration cell that has both electrodes made of some metal M. Solution A in one...
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Non Standard Electrochemical Cell
1. Calculate the emf generated, Gibbs Free-Energy and the
standard Gibbs Free-Energy by the cell in the given notation:
Zn, IZn ) || H og)| Hae) Pt)
When [Zn ] = 4.0 x 10 M, [H] = 0.010 M, [H] = 1.0 M
2. Calculate the emf, E at 298.15K for the given reaction:
Cr,0,
7H,O
(aq)
(aq)l
+61-- 2Cr * () + 312
2-
+ 14 H*
(aq)
(aq)
[Cr,0, 2-]= 2.0 M; [H'] = 1.0 M; [I-']= 1.0 M;
[Cr *] = 1.0x10 - M and [H,O] = 1.0 x 10 -$ M
Calculate the free-energy occurring in the system.
When
3. If the voltage of Zn-H" cell is 0.542 V at 25 ° C, What is the
concentration of the H'?
when : [Zn 2] = 0.01 M and [H,] = 1.0 M
4. A galvanic cell consists of a chromium, Cr bar in a chromic
sulfate solution, Cr,(SO.), containing 0.25 moles and a silver,
Ag bar in a silver sulfate solution (Ag,So, ) containing 0.35
moles in a 3 L solution. and a sodium sulfate solution use as a
salt bridge solution. The silver electrode is positive relative to
the chromium electrode. Write the cell half- reactions, overall
reaction and cell notation. Calculate the following:
A) Gibbs Free - Energy
B) Standard Gibbs Free – Energy
C) Electrode potential of the cell.
5. Calculate the emf generated by the cell in the given notation:
AlI Al e II I 2) II-
When [Al*] = 4.0 x 10 * M and [I-]=0.010 M
(aq)
!!
Transcribed Image Text:Non Standard Electrochemical Cell 1. Calculate the emf generated, Gibbs Free-Energy and the standard Gibbs Free-Energy by the cell in the given notation: Zn, IZn ) || H og)| Hae) Pt) When [Zn ] = 4.0 x 10 M, [H] = 0.010 M, [H] = 1.0 M 2. Calculate the emf, E at 298.15K for the given reaction: Cr,0, 7H,O (aq) (aq)l +61-- 2Cr * () + 312 2- + 14 H* (aq) (aq) [Cr,0, 2-]= 2.0 M; [H'] = 1.0 M; [I-']= 1.0 M; [Cr *] = 1.0x10 - M and [H,O] = 1.0 x 10 -$ M Calculate the free-energy occurring in the system. When 3. If the voltage of Zn-H" cell is 0.542 V at 25 ° C, What is the concentration of the H'? when : [Zn 2] = 0.01 M and [H,] = 1.0 M 4. A galvanic cell consists of a chromium, Cr bar in a chromic sulfate solution, Cr,(SO.), containing 0.25 moles and a silver, Ag bar in a silver sulfate solution (Ag,So, ) containing 0.35 moles in a 3 L solution. and a sodium sulfate solution use as a salt bridge solution. The silver electrode is positive relative to the chromium electrode. Write the cell half- reactions, overall reaction and cell notation. Calculate the following: A) Gibbs Free - Energy B) Standard Gibbs Free – Energy C) Electrode potential of the cell. 5. Calculate the emf generated by the cell in the given notation: AlI Al e II I 2) II- When [Al*] = 4.0 x 10 * M and [I-]=0.010 M (aq) !!
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