Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu...

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Transcript of Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu...

Page 1: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Electrochemical Cells

Page 2: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Spontaneous Redox Reaction - Zn + Cu2+

Zn(s) + Cu2+(aq) Zn2+(aq) + Cu(s)

Page 3: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Non-Spontaneous Redox Reaction - Water

2 H2O(l) 2 H2(g) + O2(g)

Page 4: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Battery Construction - Zn + Cu2+

Zn|Zn2+||Cu2+|Cu

Page 5: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Volta’s Pile

Page 6: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Commercial Cells - Le Clanche (Dry) Cell

Zn | Zn2+, NH4Cl, MnO2 | C

Zn + 2 MnO2 + 2 NH4+ Mn2O3 + 2 NH3 + H2O + Zn2+

http://upload.wikimedia.org/wikipedia/commons/f/f2/Mono_Battery.jpg
Page 7: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Commercial Cells - Lead Storage Battery

Pb(s) | PbSO4(s) | H2SO4(aq) | PbSO4(s) | PbO2(s) | Pb(s)

Pb + PbO2 + 2 H2SO4 2 PbSO4 + 2 H2O

Page 8: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Commercial Cells - Nickel-Cadmium Battery

Zn | ZnO2 | OH- | Hg | HgO

Zn + HgO ZnO + Hg

Page 9: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Battery Connections

Series Connection

Parallel Connection

Page 10: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Historical Origin of Sign Convention

Page 11: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Cell Conventions

Page 12: Electrochemical Cells. Spontaneous Redox Reaction - Zn + Cu 2+ Zn (s) + Cu 2+ (aq) Zn 2+ (aq) + Cu (s)

Standard Hydrogen Electrode (SHE)

SHE || Cathode

Pt(s) | H2(g,f=1) | H+(aq,a=1) || Cathode


Predicting Cu and Zn sorption capacity of biochar from ...centaur.reading.ac.uk/74645/1/Predicting Cu and Zn sorption... · RESEARCH ARTICLE Predicting Cu and Zn sorption capacity

Predicting Cu and Zn sorption capacity of biochar from ...centaur.reading.ac.uk/74645/1/Predicting Cu and Zn sorption... · RESEARCH ARTICLE Predicting Cu and Zn sorption capacity

NATIONAL DEPARTMENT OF EDUCATIONmeerkatmind.com/wp-content/uploads/2017/08/Physical... · Web viewCell Y: Zn(s) + CuSO4(aq) → Cu(s) + ZnSO4(aq) Which ONE of the following correctly

NATIONAL DEPARTMENT OF EDUCATIONmeerkatmind.com/wp-content/uploads/2017/08/Physical... · Web viewCell Y: Zn(s) + CuSO4(aq) → Cu(s) + ZnSO4(aq) Which ONE of the following correctly

Zn & Cu, Biochemistry minerals

Zn & Cu, Biochemistry minerals

Pirometalurgia - Zn Pb Ti Cu

Pirometalurgia - Zn Pb Ti Cu

Electrochemistry: Oxidation-Reduction Reactions Zn(s) + Cu +2 (aq) Zn 2+ (aq) + Cu(s) loss of 2e - gaining to 2e - Zinc is oxidized - it goes up in.

Electrochemistry: Oxidation-Reduction Reactions Zn(s) + Cu +2 (aq) Zn 2+ (aq) + Cu(s) loss of 2e - gaining to 2e - Zinc is oxidized - it goes up in.

Zn(s) + H SO (aq) ----> ZnSO (aq) + H (g)

Zn(s) + H SO (aq) ----> ZnSO (aq) + H (g)

Zn 2+ + Cu° No reacciona Zn° + Cu 2+ Zn 2+ + Cu°.

Zn 2+ + Cu° No reacciona Zn° + Cu 2+ Zn 2+ + Cu°.

Electrochemistry CuSO 4 (aq) Zn ZnSO 4 (aq) Zn Cu.

Electrochemistry CuSO 4 (aq) Zn ZnSO 4 (aq) Zn Cu.

Prentice Hall © 2003Chapter 20 Zn added to HCl yields the spontaneous reaction Zn(s) + 2H + (aq) Zn 2+ (aq) + H 2 (g). The oxidation number of Zn has.

Prentice Hall © 2003Chapter 20 Zn added to HCl yields the spontaneous reaction Zn(s) + 2H + (aq) Zn 2+ (aq) + H 2 (g). The oxidation number of Zn has.

DPP - Daily Practice Problems...DPP/ CC17 -----tc-Q?I 17. E0 forthe cell, Zn I Zn 2 + (aq) II Cu 2+ (aq)l Cu is 1.10 V at 25 C. The equilibrium constant for the cell reaction Zn +

DPP - Daily Practice Problems...DPP/ CC17 -----tc-Q?I 17. E0 forthe cell, Zn I Zn 2 + (aq) II Cu 2+ (aq)l Cu is 1.10 V at 25 C. The equilibrium constant for the cell reaction Zn +

Zn(s) + Cu aq) → Zn ) + Cu(

Zn(s) + Cu aq) → Zn ) + Cu(

Elettrochimica. Cu(s) + Zn 2+ (aq) Cu 2+ (aq) + Zn(s) Cu 2+ (aq) + Zn(s) Cu(s) + Zn 2+ (aq) Cu Zn 2+ Zn Cu 2+ Cu potere ossidante di Zn 2+ /Zn potere.

Elettrochimica. Cu(s) + Zn 2+ (aq) Cu 2+ (aq) + Zn(s) Cu 2+ (aq) + Zn(s) Cu(s) + Zn 2+ (aq) Cu Zn 2+ Zn Cu 2+ Cu potere ossidante di Zn 2+ /Zn potere.

Adsorpsi Cu Dan Zn

Adsorpsi Cu Dan Zn

Ch17.1 – Galvanic Cells Ch4: Redox involves the transfer of electrons (OIL RIG) Zn (s) + CuSO 4(aq) ZnSO 4(aq) + Cu (s) Half rxns: Ox:Red agent: _____.

Ch17.1 – Galvanic Cells Ch4: Redox involves the transfer of electrons (OIL RIG) Zn (s) + CuSO 4(aq) ZnSO 4(aq) + Cu (s) Half rxns: Ox:Red agent: _____.

Battery Chemistry Electrochemical Cells Cu 2+ (aq) + Zn(s) Cu(s) + Zn 2+ (aq)

Battery Chemistry Electrochemical Cells Cu 2+ (aq) + Zn(s) Cu(s) + Zn 2+ (aq)

Cu Zn 2+ Cu(s) + Zn 2+ (aq) Cu 2+ (aq) + Zn(s) Zn Cu 2+ Cu 2+ (aq) + Zn(s) Cu(s) + Zn 2+ (aq) potere ossidante di Cu 2+ /Cu > potere ossidante di Zn.

Cu Zn 2+ Cu(s) + Zn 2+ (aq) Cu 2+ (aq) + Zn(s) Zn Cu 2+ Cu 2+ (aq) + Zn(s) Cu(s) + Zn 2+ (aq) potere ossidante di Cu 2+ /Cu > potere ossidante di Zn.

Zn 2+ + Cu° → No reacciona

Zn 2+ + Cu° → No reacciona

Oxidation Reduction Regents Review. Zn(s) + Pb 2 + (aq) → Zn 2 + (aq) + Pb(s) In the completed external circuit, the electrons flow from: A) Pb(s) to.

Oxidation Reduction Regents Review. Zn(s) + Pb 2 + (aq) → Zn 2 + (aq) + Pb(s) In the completed external circuit, the electrons flow from: A) Pb(s) to.

Electron-Transfer Reactions Cu 2+ (aq) + Zn(s) Cu(s) + Zn 2+ (aq)

Electron-Transfer Reactions Cu 2+ (aq) + Zn(s) Cu(s) + Zn 2+ (aq)

1 Replacement Reactions Single Replacement –One species changing at expense of another –Zinc dissolving in Copper Sulfate solution Zn(s) + Cu 2+ (aq)

1 Replacement Reactions Single Replacement –One species changing at expense of another –Zinc dissolving in Copper Sulfate solution Zn(s) + Cu 2+ (aq)