
reaksi redoks
Authored by Ika AINI
3rd Grade
Used 11+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Reaksi di bawah ini yang merupakan reaksi redoks adalah….
AgNO3 + NaCl → AgCl + NaNO3
2 KI + Cl2 → I2 + 2 KCl
NH3 + H2O → NH4+ + OH−
NaOH + CH3COOH → CH3COONa + H2O
Al2O3 + 2 NaOH → 2 NaAlO2 + H2O
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Persamaan reaksi autoredoks dari logam tembaga (I) oksida dengan larutan asam klorida sebagai berikut:
Cu2O + 2 HCl → Cu + CuCl2 + H2O
Zat yang mengalami reaksi autoredoks beserta perubahan bilangan oksidasinya adalah ....
Cu, perubahan +1 menjadi 0 dan +2
Cu, perubahan +1 menjadi +1 dan +2
Cu, perubahan –2 menjadi 0 dan +2
Cl, perubahan –2 menjadi 0 dan +2
Cl, perubahan +2 menjadi +1 dan +2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Reaksi redoks berikut ini:
K2Cr2O7 + a HCl → 2 KCl + b CrCl3 + c Cl2 + d H2O
Jika persamaan reaksi tersebut disetarakan,harga koefisien a, b, c, dan d berturut-turut adalah ….
2, 3, 7, 14
7, 2, 3, 14
14, 2, 2, 7
14, 2, 3, 7
14, 3, 3, 7
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Persamaan reaksi redoks:
a MnO4-(aq) + b C2O42-(aq) + H2O(l) → MnO2(s) + c CO2(g) + d OH-(aq).
Harga koefisien reaksi a, b, c, dan d berturut-turut adalah ....
2, 3, 6, dan 8
2, 6, 3, dan 8
3, 2, 6, dan 8
3, 6, 8, dan 2
6, 8, 3, dan 2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Di antara reaksi-reaksi tersebut di bawah ini yang merupakan contoh reaksi redoks adalah ….
AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
2KI(aq) + Cl2(aq) → I2(s) + 2KCI(aq)
NH3(aq) + H2O(l) → NH4+(aq) + OH-(aq)
NaOH(aq) + CH3COOH(aq) → CH3COONa(aq) + H2O(l)
Al2O3(S) + 2NaOH(aq) → 2NaAlO2(aq) + H2O(l)
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sel volta terdiri dari elektrode perak dan tembaga, jika
Ag+ +e → Ag E0= +0,80 volt
Cu2+ +2e → Cu E0= +0,34 volt
Pernyataan di bawah ini yang benar adalah … .
Ag sebagai Anoda
Cu sebagai Katoda
Potensial selnya = 0,46
Elektroda Ag semakin tipis
Cu larut dalam air
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Dari data E0 :
Zn2+ / Zn = - 0,76 volt
F2 / 2F– = +3,63 volt
Fe2+ / Fe = - 0,44 volt
Ag+/Ag =+0,83 volt
Ca2+/ Ca = - 2,8 volt
E sel yang paling kecil terdapat pada reaksi redoks …
Ca + Ag+ → Ca2+ + Ag
Ca + F2 → Ca2 ++ 2F –
Fe + Ca2+ → Fe2+ + Ca
Zn + F2 → Zn2+ + 2F –
Zn + Fe2+ → Fe + Zn2+
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