
elektrokimia
Authored by kiki sukirman
Chemistry
12th Grade
Used 4+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Bilangan oksidasi atom S yang paling tinggi terdapat pada….
SO2
S2O32-
S4O62-
SO42-
H2S
2.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Perhatikan potensial elektroda berikut.
Cu2+ I Cu Eo = + 0,34 V
Ag+ I Ag Eo = +0,80 V
Notasi sel:
Cu(s)ǀ Cu2+(aq) ∥ Ag+(aq)ǀAg(s)
Memiliki potensial sel sebesar….
0,06 volt
0,46 volt
0,56 volt
1,14 volt
1,26 volt
3.
MULTIPLE CHOICE QUESTION
3 mins • 4 pts
Diketahui data potensial elektroda berikut
Ag+ + e- → Ag Eo = + 0,80 V
Mg2+ + 2e- → Mg Eo = -2,37 V
ln3+ + 3e- → ln Eo = -0,34 V
Mn2+ + 2e- → Mn Eo = -1,20 V
Zn2+ + 2e- → Zn Eo = -0,76 V
Pasangan sel berikut yang memberikan perbedaan potensial sebesar +1,14 Volt adalah….
Ag ǀ Ag+ ∥ Zn2+ǀ Zn
Mn ǀ Mn2+ ∥ Mg2+ǀ Mg
Mn ǀ Mn2+ ∥ Ag+ǀ Ag
Mg ǀ Mg2+ ∥ Ag+ǀ Ag
In ǀ In3+ ∥ Ag+ǀ Ag
4.
MULTIPLE CHOICE QUESTION
45 sec • 4 pts
Sel volta mengubah energi …. Menjadi energi ….
Listrik → potensial
Listrik → kinetic
Listrik → kimia
Kimia → listrik
Kimia → kinetic
5.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Diketahui :
Sn2+(aq) + 2e- → Sn(s) Eo = -0.04 V
Ag+(aq) + e- → Ag(s)
Eo = 0.80 V
Suatu sel volta yang terdiri :
Sn / Sn2+ ║Ag+ / Ag
Akan menghasilkan potensial sel sebesar …
+0.76 volt
+1.64 volt
+0.94 volt
+1.56 volt
+0.84 volt
6.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Perhatikan gambar rangkaian sel volta berikut
Berdasarkan gambar rangkaian tersebut, diagram sel
yang tepat adalah…
Mg2+ | Mg || Cu | Cu2+
Mg2+ | Mg || Cu2+ | Cu
Mg | Mg2+ || Cu | Cu2+
Mg | Mg2+ || Cu2+ | Cu
Cu2+ | Cu || Mg | Mg2+
7.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Pada elektrolisis larutan tembaga (II) sulfat dengan elektrode tembaga, di anode
terjadi reaksi…
Cu2+ (aq) + 2e- → Cu(s)
Cu(s) → Cu2+ (aq) + 2e-
2H2O (l) + 2e- → H2 (g) + OH-
(aq)
2H2O (l) → 4H+
(aq) + O2 (g) + 4e-
SO4
2-
(aq) +H2O (l) → H2SO4 (aq)
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