
Review Kimia Sel Volta dan Sel Elektrolisis
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Stevanky 1
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11 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
DIketahui dua elektrode sebagai berikut
Mn2+ (aq) + 2e- → Mn (s) E° = -1,18
Fe2+ (aq) + 2e- → Fe (s) E° = -0,44
Tentukan E° sel dan reaksi selnya
E° sel = -0,74
Reaksi sel : Mn2+ + Fe2+→ Mn + Fe
E° sel = +0,74
Reaksi sel : Mn2+ + Fe2+→ Mn + Fe
E° sel = +0,74
Reaksi sel : Mn + Fe2+→ Mn2+ + Fe
E° sel = -0,74
Reaksi sel : Mn2+ + Fe → Mn + Fe2+
E° sel = -1,62
Reaksi sel : Mn2+ + Fe → Mn + Fe2+
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sifat Katode dan anode dalam sel elektrolisis berturut-turut adalah
Reduksi (-) dan Oksidasi (+)
Reduksi (+) dan Oksidasi (-)
Oksidasi (-) dan Reduksi (+)
Oksidasi (+) dan Reduksi (-)
Tidak ada jawaban yang benar
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Yang digolongkan sebagai elektrode inert adalah
C, Pt, Al
C, Pt, Au
Cu, Pt, A
Cl, Pt, Au
Cl, Pt, Al
Answer explanation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Yang berasal dari logam aktif adalah
Golongan IA, IIA, Al, dan Mn
Golongan IA dan IIA
Golongan IA, IIA, Al, dan Mg
Golongan IA, Al, dan Mg
Golongan IA, IIA, Au, dan Mg
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Rumus anode untuk elektrode tidak inert
Lx+ (s) → L (aq) + xe-
L (s) → Lx+ (aq) + xe-
Lx+ (s) + xe- → L (aq)
L (s) + e- → L (aq)
Tidak ada jawaban yang benar
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Rumus katode larutan logam aktif
2H2O (I) +e- → H2 (g) + OH- (aq)
2H2O (I) → 4H+ (aq) + O2 (g) + 4e-
2H2O (I) +2e- → H2 (g) + 2OH- (aq)
2H2O (I) → H+ (aq) + O2 (g) + e-
2H2O (I) → 2H+ (aq) + O2 (g) + 2e-
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Tuliskan reaksi elektrolisis larutan MgCl2 dengan elektode grafit
2H2O + 2Cl- → 2OH- +H2 +Cl2
2H2O + 2Cl → 2OH +H2 +Cl2
Mg2+ + 2Cl- → Mg +Cl2
4Cl + 4H + O2 → 2Cl2 + 2H2O
4Cl- + 4H+ + O2 → 2Cl2 + 2H2O
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