Chemistry, asked by Austinnialayatt2697, 1 year ago

5 example of corrosion with chemical equations

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Answered by sooonnniii
0
H2O2 + Ni → H2O + Ni2+

H2O + Mg2+ → H2O2 + Mg

Ni + PbO2 → Pb2+ + Ni2+

Al3+ + OH- → Al + O2

Answers:

H2O2 + Ni → H2O + Ni2+

H2O2 + 2H+ + 2e- → 2H2O    cathode: 1.776 V vs. SHE

Ni →  Ni2+ + 2e-    anode: -0.23 V

cell total reaction: H2O2 + 2H+ + Ni → 2H2O + Ni2+

cell potential: Ecathode - Eanode = 1.776 - (-0.23) = 2.01 V

H2O + Mg2+ → H2O2 + Mg

Mg2+ + 2e- →  Mg   cathode: -2.375 V vs. SHE

2H2O → H2O2 + 2H+ + 2e-    anode: 1.776 V

cell total reaction: H2O + Mg2+ → H2O2 + 2H++ Mg

cell potential: Ecathode - Eanode =  -2.375 - 1.776 = -4.151 V

Ni + PbO2 → Pb2+ + Ni2+

PbO2 + 4H+ + 2e- → Pb2+ + 2H2O    cathode: 1.467 V vs. SHE

Ni →  Ni2+ + 2e-    anode: -0.23 V

cell total reaction: PbO2 + 4H+ + Ni → Pb2++ 2H2O + Ni2+

cell potential: Ecathode - Eanode =  1.467 - (-0.23) = 1.70 V

Al3+ + OH- → Al + O2

4 x (Al3+ + 3e- →  Al)     cathode: -1.706 V vs. SHE

3 x (4OH- →  O2 + 2H2O + 4e-)   anode: 0.401 V

cell total reaction: 4Al3+ + 12OH-  → 4Al + 3O2 + 6H2O

cell potential: Ecathode - Eanode =  -1.706 - 0.401 = -2.107 V

plzz mark as brain list plsssThe materials like water pipes which are made up of metal continuously exposed to moist atmosphere will get corrode and over the time water starts leaking.
The bottom layer of the boats or ships get corrode, so for every fixed period of time they will get replaced by new materials.
Rusting of some of the materials in our house items.
Answered by NKS2003
0
1.rusting of iron particles                                                                                         2.DAMAGES THE MARBLE                                                                                3.CORROSION OF MACHINES.
         
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