
elektrolisis 2
Authored by Kicky Wardani
Chemistry
12th Grade
NGSS covered
Used 89+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pada elektrolisis leburan BaCl2 dengan elektrode grafit, di katode akan dihasilkan ....
gas klor
gas hidrogen
larutan Ba(OH)2
logam Ba
gas oksigen
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pada elektrolisis larutan Na2SO4 dengan menggunakan elektrode platina, di katode akan menghasilkan ....
gas SO2
gas H2
gas O2
logam Na
air
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berdasarkan gambar tersebut, sel elektrolisis yang memiliki pH dibawah 7 adalah ....
(1) dan (2)
(1) dan (3)
(2) dan (3)
(3) dan (4)
(4) dan (5)
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Pada penyepuhan cincin tembaga dengan emas digunakan larutan AuCl3 (Ar Au = 197). Pengrajin perhiasan menyepuh cincin tembaga dengan emas selama 9650 detik dengan arus 3 Ampere. Massa emas yang digunakan untuk melapisi cincin tembaga sebanyak ... gram.
1,97
3,94
7,88
19,70
39,40
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Pada penyepuhan cicncin besi dengan menggunakan perak digunakan AgNO3 (Ar Ag = 108). Pengrajin perhiasan menyepuh cincin tembaga dengan perak selama 965 detik dengan arus 10 ampere. Massa perak yang digunakan untuk melapisi cincin besi sebanyak ... gram.
1,08
5,90
10,80
15,40
59,00
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan persamaan reaksi yang terjadi pada sel elektrolisis berikut :
Anoda : 2H2O (l) O2 (g) + 4H+ (aq) + 4e
Katoda : 2H2O (l) + 2e H2 (g) +2OH- (aq)
Gambar yang paling tepat menggambarkan terjadi reaksi seperti yang diberikan adalah ....
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada elektrolisis larutan tembaga(II) sulfat dengan elektrode tembaga, di anode terjadi reaksi ….
Cu2+ + 2e → Cu
Cu → Cu2+ + 2e
2H2O + 2e → 2OH- + H2
2H2O → 4H+ + O2 + 4e
H2 → 2H+ + 2e
Tags
NGSS.HS-PS1-4
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