You try this! Create and label: O 2 ½ cell and Cr (s) ½ cell (neutral conditions) V __.
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You try this! Create and label: O 2 ½ cell and Cr (s) ½ cell (neutral conditions) V _ _
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19-Dec-2015 -
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Transcript of You try this! Create and label: O 2 ½ cell and Cr (s) ½ cell (neutral conditions) V __.
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
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You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
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O2 bubbled in
O2 ½ cell
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
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O2 bubbled in
O2 ½ cell NaClNa+,Cl-
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
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O2 bubbled in
O2 ½ cell NaCl
Pt(s)
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s)
Cr ½ cell
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s)
Cr ½ cell
Cr(s)
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
OA OA RA --- OA ----- RA OA
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
Anode
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathode
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathodee-
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathodee-
NO3-K+
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathodee-
NO3-K+
1/2O2(g) +2H+(10-7M) + 2e- H2O Cr(s) Cr3+ + 3e-
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathodee-
NO3-K+
1/2O2(g) +2H+(10-7M) + 2e- H2O Cr(s) Cr3+ + 3e-
+ -
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathodee-
NO3-K+
1/2O2(g) +2H+(10-7M) + 2e- H2O Cr(s) Cr3+ + 3e-
+ -
1/2O2(g) +2H+(10-7M) + 2e- H2O Eored=+0.82V
Cr(s) Cr3+ + 3e- Eoox=+0.74V
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathodee-
NO3-K+
1/2O2(g) +2H+(10-7M) + 2e- H2O Cr(s) Cr3+ + 3e-
+ -
(1/2O2(g) +2H+(10-7M) + 2e- H2O)x3 Eored=+0.82V
(Cr(s) Cr3+ + 3e-)x2 Eoox=+0.74V
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathodee-
NO3-K+
1/2O2(g) +2H+(10-7M) + 2e- H2O Cr(s) Cr3+ + 3e-
+ -
3/2O2(g) +6H+(10-7M) +6e- 3H2O Eored=+0.82V
2Cr(s) 2Cr3+ + 6e- Eoox=+0.74V
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathodee-
NO3-K+
1/2O2(g) +2H+(10-7M) + 2e- H2O Cr(s) Cr3+ + 3e-
+ -
3/2O2(g) +6H+(10-7M) +6e- 3H2O Eored=+0.82V
2Cr(s) 2Cr3+ + 6e- Eoox=+0.74V+
3/2O2(g) +6H+(10-7M) +2Cr(s) 3H2O+2Cr3+ Eo=+1.56V
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathodee-
NO3-K+
1/2O2(g) +2H+(10-7M) + 2e- H2O Cr(s) Cr3+ + 3e-
+ -
3/2O2(g) +6H+(10-7M) +6e- 3H2O Eored=+0.82V
2Cr(s) 2Cr3+ + 6e- Eoox=+0.74V+
(3/2O2(g) +6H+(10-7M) +2Cr(s) 3H2O+2Cr3+ )x2 Eo=+1.56V3O2(g) +12H+(10-7M) +4Cr(s) 6H2O+4Cr3+
You try this! Create and label: O2 ½ cell and Cr(s) ½ cell (neutral conditions)
V
__
O2 bubbled in
O2 ½ cell NaCl
Pt(s) Cr(s)
Cr ½ cellCr(NO3)3
Cr3+, NO3-
KNO3
O2, Na+, Cl-, Pt, K+, NO3-, Cr(s), Cr3+
SOA OA RA --- OA ----- SRA OA
AnodeCathodee-
NO3-K+
1/2O2(g) +2H+(10-7M) + 2e- H2O Cr(s) Cr3+ + 3e-
+ -
3/2O2(g) +6H+(10-7M) +6e- 3H2O Eored=+0.82V
2Cr(s) 2Cr3+ + 6e- Eoox=+0.74V+
3/2O2(g) +6H+(10-7M) +2Cr(s) 3H2O+2Cr3+ Eo=+1.56V
pH increases Mass decreasescorrosion
3O2(g) +12H+(10-7M) +4Cr(s) 6H2O+4Cr3+
And Now, your homework!!!!!
