Penilaian Harian Elektrokimia
Quiz
•
Chemistry
•
12th Grade
•
Hard
Irma Rohayanti
Used 8+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
3Br2 (g) + a OH- (aq) → b BrO3- + c Br- (aq) + d H2O (l)
Harga koefisien a, b, c, d supaya reaksi di atas setara adalah ….
A. 2, 2, 5 dan 1
B. 6, 1, 5 dan 3
C. 6, 5, 1 dan 3
D. 5, 6, 3 dan 1
E. 4, 1, 5 dan 2
2.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Diketahui EoZn = -0,76 V dan EoCu = +0,34 V, maka harga Eosel tersebut adalah ...
A. -1,10 V
B. -0,42 V
C. -0,33 V
D. +0,42 V
E. +1,10 V
3.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Diketahui reaksi:
aZn + bNO3- → c Zn2+ + NH4+ (suasana asam)
Jika reaksi diatas disetarakan makan koefisien a, b, dan c berturut-turut adalah . . .
A. 4, 1, 1
B. 4, 1, 2
C. 4, 1, 3
D. 4, 1, 4
E. 4, 1, 5
4.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Diketahui reaksi :
aCl2 + bIO3- → cCl- + IO4-
Jika reaksi tersebut disetarakan maka nilai koefisien a, b dan c adalah . . .
A. 1, 1, 2
B. 1, 2, 1
C. 1, 1, 1
D. 1, 2, 2
E. 2, 1, 1
5.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Nilai bilangan oksidasi P dalam ion PO4³‾ adalah . . . .
A. +2
B. +3
C. +4
D. +5
E. +6
6.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Nilai bilangan okidasi dari S didalam Na2SO3 adalah . . .
A. 3
B. 4
C. 5
D. 6
E. 7
7.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Bahan yang digunakan sebagai elektrode pada sel aki (accu) adalah …
A. Pt dan C
B. Zn dan C
C. Pb dan PbO2
D. Zn dan Cu
E. Cu dan PbO2
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