
CORROSION
Authored by Novita Dewi
Chemistry
12th Grade
Used 7+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Berikut ini adalah rumus dari karat besi adalah ....
Fe2O3
Fe2O3. xH2O
Fe3O2
FeO
Fe
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Berikut ini adalah faktor-faktor yang mempercepat korosi kecuali ....
air dan kelembapan udara
elektrolisis
permukaan logam yang tidak rata
terbentuknya sel elektrokimia
pengecatan
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cara yang paling tepat untuk mencegah korosi pada kaleng kemasan adalah ....
mengecat
melumuri dengan oli
galvanisasi
tin plating
dibalut dengan plastik
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Perhatikan gambar berikut.
Perkaratan paku besi paling lambat terjadi pada gelas ke ....
1
2
3
4
5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui:
Al3+(aq) + 3e ---> Al(s) ; EO = -1,66 V
Zn2+(aq) + 2e --> Zn(s) ; EO = -0,76 V
Fe2+(aq) + 2e --> Fe(s) ; EO = -0,44 V
Cu2+(aq) + 2e --> Cu(s) ; EO = +0,34 V
Ag+(aq) + e --> Ag(s) ; EO = +0,80 V
Dengan cara perlindungan katodik, maka logam yang tepat digunakan untuk mencegah terjadinya korosi pada besi adalah logam ....
Cu dan Ag
Al dan Zn
Zn dan Ag
Cu dan Zn
Al dan Cu
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