
Reaksi Redoks
Authored by Suchory Putri
Chemistry
10th Grade
Used 45+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Reaksi oksidasi ditunjukkan oleh....
Cu2+ + 2e → Cu
Na+ + e → Na
I2 + 2e → 2I−
Fe → Fe2+ + 2e
Sn4+ + 2e → Sn2+
2.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
Perhatikan reaksi redoks di bawah ini:
Cl2 + 2KOH → KCl + KClO + H2O
Bilangan oksidasi klorin berubah dari…. menjadi ….
-1 menjadi +1 dan 0
+1 menjadi -1 dan 0
0 menjadi -4 dan -2
-2 menjadi 0 dan +1
0 menjadi -1 dan +1
3.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Bilangan oksidasi S terendah terdapat dalam senyawa ….
H2SO4
SO2
K2SO3
Na2S2O3
Al2S3
4.
MULTIPLE CHOICE QUESTION
3 mins • 3 pts
Besi sebagai oksidator
Air sebagai oksidator
Oksigen mengoksidasi besi
Besi mengalami reduksi
Besi mereduksi air
5.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Di antara reaksi berikut ini, yang tidak tergolong reaksi redoks adalah...
S + O2 → SO2
MnO2 + 4H+ + 2Cl− → Mn2+ + Cl2 + 2H2O
2S2O32− + I2 → S4O62- + 2I−
Al2O3 + 6H+ → 2Al3+ + 3H2O
Cr2O72− + 14H+ + 6Fe2+ → 2Cr3+ + 6Fe3+ + 7H2O
6.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Perhatikan kelima reaksi di bawah ini:
(A). 2SO2(g) + O2(g) → 2SO3(g)
(B). 2FeCl3(aq) + H2S(s) → 2FeCl2(aq) + 2HCl(aq) + S(s)
(C). 3I2(s) + 6KOH(aq) → 5KI(aq) + KIO3(aq) + 3H2O(l)
(D). SO2(g) + 2H2S(g) → 3S(s) + 2H2O(l)
(E). 2CuSO4(aq) 4KI(aq) → 2CuI(aq) + I2(g) + 2K2SO4(aq)
Di antara reaksi di atas, yang tergolong reaksi disproporsionasi adalah ….
(A)
(B)
(C)
(D)
(E)
7.
MULTIPLE CHOICE QUESTION
5 mins • 5 pts
Reaksi autoredoks dibagi menjadi reaksi disproporsionasi dan reaksi konproporsionasi. Di antara reaksi berikut ini, yang termasuk reaksi konproporsionasi adalah....
Cr2O72− + 14H+ + 6Fe2+ → 2Cr3+ + 6Fe3+ + 7H2O
MnO2 + 4H+ + 2Cl− → Mn2+ + Cl2 + 2H2O
2S2O32− + I2 → S4O62- + 2I−
S + O2 → SO2
Al2O3 + 6H+ → 2Al3+ + 3H2O
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