
Ulangan Harian REDOKS
Authored by Nanik Martiwi
Chemistry
12th Grade
Used 4+ times

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35 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Biloks P dalam senyawa Ca3(PO4)2 adalah ….
+ 5
– 5
+ 3
– 3
+ 2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Mn yang tidak dapat dioksidasi lagi terdapat dalam ….
MnO2
Mn(OH)2
KMnO4
MnO42-
MnSO4
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Reaksi pengusiran halogen dari garamnya oleh halogen lain sebagai berikut.
Cl2 + 2KBr → 2KCl + Br2
Pernyataan yang benar adalah ….
Reaksi bukan redoks
Reaksi diatas termasuk disproporsionasi
Cl2 mengalami oksidasi
Br2 merupakan hasil oksidasi
Br dan KBr sebagai oksidator
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Persamaan reaksi : xCr2O72- + yCl- → mCr3+ + nCl2 dalam suasana asam (belum setara). Perbandingan x dan y setelah setara adalah ….
1 : 1
2 : 3
1 : 3
3 : 2
1 : 6
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahu reaksi : aMnO4- + bC2O42- + 16H+ → cMn2+ + H2O + eCO2 . Harga a, b, dan c, pada reaksi redoks diatas adalah ….
2, 5, 5
2, 5, 10
5, 2, 2
5, 2, 10
5, 2, 5
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada reaksi : H2SO4 + HI → H2S + I2 + H2O . 1,5 mol asam sulfat dapat mengoksidasi hidrogen iodide sebanyak ….
6 mol
9 mol
12 mol
4 mol
2 mol
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diketahui harga potensial reduksi sebagai berikut.
Cd2+ + 2e → Cd E0 = - 0,40 V
Bi3+ + 3e → Bi E0 = + 0,25 V
Ta3+ + 3e → Ta E0 = - 0,80 V
Urutan ketiga logam diatas dengan sifat reduktornya yang meningkat adalah ….
Ta, Cd, Bi
Bi, Cd, Ta
Cd, Bi, Ta
Cd, Ta, Bi
Bi, Ta, Cd
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