Evaluasi Sel Elektrolisis
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Dwi Harta
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Pada elektrolisis larutan asam sulfat, reaksi yang berlangsung pada katoda adalah ….
2H2O + 2e → H2 + 2OH-
2H2O → 4H+ + O2 + 4e
2H+ + 2e → H2
2H → 2H+ + 2e
H2 → 2H+ + 2e
2.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Jika arus sebesar 3 Ampere mengalir selama 10 detik, berapakah total muatan listrik yang mengalir?
10 Coulomb
13 Coulomb
30 Coulomb
40 Coulomb
3 Coulomb
3.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Pada proses elektrolisis larutan natrium klorida dengan elektrode karbon, zat yang terjadi pada katode adalah ….
gas oksigen
gas hidrogen dan natrium hidroksida
logam natrium
gas klorin
asam klorida
4.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Pernyataan yang TEPAT pada proses elektrolisis larutan Zn(NO3)2 dengan elektrode Pt adalah ….
di katode terjadi reaksi : 2 H2O + 2e → H2 + 2 OH-
di anode terjadi reaksi : 2 NO3- → N2 + 3 O2 + 2e
di katode terbentuk logam Pt
di anode terbentuk gas oksigen
tidak terjadi reaksi
5.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Pada proses penyepuhan paku besi dengan tembaga dalam larutan CuSO₄, pernyataan yang TIDAK tepat adalah ….
Ion SO₄²⁻ teroksidasi di anoda
Ion Cu²⁺ tereduksi di katoda
Besi menjadi katoda
Tembaga larut di anoda
Terjadi oksidasi Cu menjadi Cu²⁺ di anoda
6.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Hasil elektrolisis larutan magnesium iodida (dengan elektrode inert) adalah ….
Mg dan I2
Mg dan O2
Mg+ dan 2 I-
H2 dan I2
H2 dan O2
7.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Perhatikan gambar beberapa sel elektrolisis tersebut!
Sel elektrolisis yang menghasilkan gas oksigen adalah ….
4 saja
3 dan 4
2 dan 3
1 dan 3
1 dan 2
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