
Quiz Elektrolisis
Authored by Fitri Hayati
Chemistry
12th Grade

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13 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Pasangan reaksi di anoda yang menghasilkan gas O2 terjadi pada nomor
(1) dan (2)
(1) dan (3)
(2) dan (3)
(2) dan (4)
(3) dan (4)
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Larutan krom(III) klorida dielektrolisis dengan arus searah sebesar 10 A. Jika pada katoda diendapkan logam krom sebesar 10,4 gram dan 1 F = 96.500 C, maka waktu yang diperlukan untuk proses elektrolisis tersebut adalah .... (Ar Cr = 52)
57.900 detik
16.083 detik
9.650 detik
5.791 detik
1.036 detik
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
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
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Reaksi yang terjadi di anoda adalah ....
Ni2+(aq) + 2e → Ni(s)
Cu(s) → C
Cu2+(aq) + 2 e
2H2O(l) → 4H+(aq) + O2(g) + 4e
SO2- (aq) + 4 H+(aq) + 2e → 2 H2O(1) + SO2(g)
Ni(s) → Ni2+(aq) + 2e
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Arus listrik 30 A secara konstant dialirkan ke dalam larutan NaCl selama 30 menit dengan elektroda inert, jika 1 F = 96.500 C maka massa NaOH (Mr = 40) yang dihasilkan adalah ....
112mg
373 mg
560 mg
11,2 g
22,4 g
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Elektrolisis larutan H2SO4 encer dengan elektroda Pt, dihasilkan 22,4 liter gas hidrogen (diukur pada STP). Jika muatan listrik yang digunakan untuk elektrolisis larutan H2SO4 tersebut dalam jumlah sama digunakan untuk elektrolisis larutan CuSO4 , massa tembaga yang diendapkan adalah .... (Ar Cu = 63 ,5)
15,9 g
31,8 g
63,5 g
127,0 g
254,0 g
7.
OPEN ENDED QUESTION
10 sec • 1 pt
Proses elektrolisis lelehan NaCl dengan elektroda karbon, digunakan arus sebesar 10 ampere selama 30 menit. Massa logam natrium yang diperoleh adalah ...
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