
Korosi
Presentation
•
Chemistry
•
12th Grade
•
Medium
Resi Handayani
Used 2+ times
FREE Resource
13 Slides • 5 Questions
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Korosi
by Resi Handayani
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Multiple Choice
Pada proses korosi besi, terjadi reaksi reduksi pada katoda dan oksidasi pada anoda yang melibatkan besi dan lingkungan disekitarnya. Reaksi yang terjadi pada anoda adalah….
O2 + 4H+ + 4e → 2H2O
2H2O → O2 + 4H+ + 4e
2H2O + 2e → H2 + 2OH–
Fe → Fe2+ + 2e
Fe2+ → Fe3+ + e
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Multiple Choice
Berikut ini percobaan logam besi yang dihubungkan dengan logam lain.
Masing–masing logam yang telah dihubungkan diletakkan ditempat yang sedikit lembab dan bersuasana asam, besi akan terlindungi dari korosi adalah percobaan ke….
V
IV
III
II
I
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Multiple Choice
Perlindungan korosi yang paling tepat dilakukan untuk melindungi logam pada rak piring adalah ….
mengecat
melumuri dengan oli
perlindungan katodik
dibuat paduan logam
dibalut dengan plastik
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Multiple Choice
Logam-logam berikut yang paling mudah mengalami korosi adalah ….
Cu
Au
Zn
Ag
Pt
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Multiple Choice
Dari gambar di atas, paku yang paling lambat mengalami korosi terdapat pada gambar nomor ....
(1)
(2)
(3)
(4)
(5)
Korosi
by Resi Handayani
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