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Quiz
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Chemistry
•
12th Grade
•
Practice Problem
•
Medium
Eka Pratiwi -
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pernyataan yang paling tepat tentang sel elektrolisi adalah....
Sel yang merubah energi listrik menjadi energi kimia
Sel dimana anoda tempat terjadi reaksi reduksi
Sel dinama katoda adalah kutub positif
Sel yang merubah energi kimia menjadi energi listrik
Sel yang dapat dijadikan sumber energi
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
0,0985 gram
0,2985 gram
0,9850 gram
2,9850 gram
9,8600 gram
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Ke dalam dua sel larutan ZnSO4 dan larutan AgNO3 yang dihubungkan secara seri dialirkan arus listrik, ternyata diendapkan 27 gram perak. Jika Ar Zn = 65 dan Ar Ag = 108 maka banyaknya seng yang mengendap adalah....
8,125 gram
16,250 gram
32,500 gram
65,00 gram
180,00 gram
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pada elektrolisis larutan KI di laboratorium, di Katoda terbentuk zat yang apabila ditetesi PP akan berwarna merah muda. Zat yang terbentuk di katoda tersebut adalah....
I2
OH-
H+
HCl
H2O
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Perak
Sendok besi
Larutan Perak
Larutan besi (III) klorida
Larutan besi (II) sulfat
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Reaksi yang terjadi pada Anoda untuk elektrolisis leleran NaCl dengan elektroda karbon adalah....
Na+(aq) + e ----> Na(s)
2Cl- (aq) ----> Cl2 (g) + 2e
2H2O (l) +2e ----> H2(g) + 2OH-(aq)
2H2O (l) ----> 4H+(aq) + O2(g) + 4e
Cl2 (g) + 2e ----> 2Cl- (aq)
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