
PTS Kimia Kelas X
Authored by Titi Setiawati
Chemistry
10th Grade
Used 21+ times

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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Reaksi berikut yang termasuk reaksi reduksi menurut konsep pelepasan dan pengikatan oksigen adalah ….
4Fe(s) + 3O2(g) → 2Fe2O3(s)
2Mg(s) + O2(g) → 2MgO(s)
4KClO3(aq) → 2KCl(aq) + 3O2(g)
4FeS2(s) + 11O2(g) → 2Fe2O3(s) + 8SO2(g)
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Reaksi berikut yang termasuk reaksi reduksi menurut konsep serah terima
elektron adalah....
Na(s) + HCl(aq) → NaCl(aq)+ H2(g)
H2(g) → 2H+(aq) + 2e-
Cu2+(aq) + 2e- → Cu(s)
Fe2+(aq) → Fe3+(aq) + e-
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada reaksi:
Ni(s) + 2AgNO3(aq) → Ni(NO3)2(aq) + 2Ag(s)
Menurut reaksi di atas bagan sel volta dapat dituliskan dengan ....
Ni | Ni2+ || Ag+ | Ag
Ag | Ag+ || Ni2+ | Ni
Ni | Ag+ || Ni2+ | Ag
Ag | Ni2+ || Ag+ | Ni
Ni2+ | Ni || Ag | Ag+
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berikut ini diberikan lima persamaan reaksi oksidasi atau reduksi yang belum setara.
(1) MnO4- → Mn2+
(2) C2O42- → CO2
(3) Mg2+ + 2e- → Mg
(4) C2H4 → C2H6
(5) FeO → Fe2O3
Kelompok persamaan reaksi yang merupakan proses reduksi ditunjukkan oleh ....
(1), (2), dan (3)
(1), (3), dan (4)
(2), (3), dan (4)
(2), (3), dan (5)
(2), (4), dan (5)
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan persamaan reaksi redoks berikut!
MnO4-(aq) + SO32-(aq) → Mn2+(aq) + SO42-(aq)
Bilangan oksidasi dari zat yang bertindak sebagai reduktor dan zat hasil oksidasi berturut-turut adalah....
+8 dan MnO4-
+7 dan SO32-
+6 dan Mn2+
+5 dan SO32-
+4 dan SO42-
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan persamaan reaksi berikut!
Co2+ (aq) + 2 e → Co (s) E° = -0,28 volt
Pb2+ (aq) + 2 e → Pb (s) E° = -0,13 volt
Diagram sel reaksi yang dapat berlangsung adalah ....
Pb | Pb2+ || Co | Co2+
Co2+ | Co || Pb | Pb2+
Pb2+ | Pb || Co2+ | Co
Pb I Pb2+|| Co2+| Co
Co | Co2+||Pb2+ | Pb
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan Gambar tentang sel volta tersebut!
Diketahui harga potensial reduksi berikut:
Ag+ + e Ag E = 0,80 volt
Zn2+ + 2e Zn E = -0,76 volt
Berdasarkan gambar di atas, harga potensial sel (E° Sel) adalah...........
—1,56 volt
—0,84 volt
+0,04 volt
+0,84 volt
+1,56 volt
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