Pada elektrolisis larutan ZnSO4 terjadi reduksi Zn2+ menjadi Zn. Massa ekivalen dari Zn adalah....(Ar Zn = 65)

Hukum Faraday

Quiz
•
12th Grade
•
Easy
Rustan Hamzah
Used 224+ times
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23 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7,5
13
15
32,5
65
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Proses elektrolisis lelehan NaCl dengan elektroda karbon, digunakan arus sebesar 10 ampere selama 30 menit. Massa logam natrium yang diperoleh adalah…..(Ar Na = 23, Cl = 35,5)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Larutan ZnSO4 dielektrolisis dengan arus listrik 5 ampere selama 10 menit. Bila Ar Zn = 65, endapan Zn yang terbentuk di katoda sebanyak....
0,84 gram
1,01 gram
1,68 gram
2,02 gram
2,34 gram
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Arus listrik sebesar i dialirkan ke dalam suatu sel ion Ag+ (Ar = 108) dan dalam waktu tertentu mengendapkan sebanyak 1,08 gram perak pada katoda. Jika jumlah listrik yang sama dialirkan melalui larutan yang mengandung ion X2+ (Ar = 40), maka jumlah logam X yang diendapkan pada katoda adalah....
0,10 gram
0,20 gram
0,27 gram
0,54 gram
2,16 gram
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Arus yang sama dialirkan ke dalam larutan CuSO4 dan larutan AgNO3. Bila massa perak yang diendapkan 0,54 gram, massa Cu yang mengendap adalah .... (Ar Cu = 63,5; Ag = 108)
0,159 gram
0,318 gram
0,636 gram
1,272 gram
2,544 gram
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Larutan krom (III) klorida dielektrolisis dengan arus searah sebesar 10A. Jika pada katoda diendapkan logam krom sebesar 10,4 gram dan 1 F = 96500C, maka waktu yang diperlukan untuk proses elektrolisis tersebut adalah …. (Ar Cr = 52)
57900 detik
5790 detik
9650 detik
96500 detik
5200 detik
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ni2+(aq) + 2e- → Ni(s)
Cu(s) → Cu2+(aq)+ 2e-
2H2O(l) → 4H+(aq) + O2(g) + 4e-
SO2-(aq) + 4H+(aq) + 2e- → 2H2O(l) + SO2(g)
Ni(s) → Ni2+(aq) + 2e-
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