Ulangan Kimia Semester ganjil XII
Quiz
•
Chemistry
•
12th Grade
•
Hard
Standards-aligned
Rysmarini eris
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20 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada reaksi MnO4- + C2O4 2- --> Mn2+ + H2O + CO2 ; Bilangan oksidasi Mn berubah dari ....
+1 menjadi +3
+2 menjadi +5
+5 menjadi +2
+7 menjadi +2
+3 menjadi 0
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
a H2O(l) + b Cl-(aq) + 2MnO4-(aq) → c Cl2(g) + 2MnO2(s) + d OH-(aq)
Setelah persamaan reaksi disetarakan maka harga a, b, c dan d adalah . . . .
3, 4, 6, 8
4, 6, 3, 8
6, 4, 3, 4
6, 8, 3, 4
8, 6, 4, 3
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika reaksi:
Cu2+(aq) + NO(g) → Cu(s) + NO3–(aq) dalam suasana basa (belum setara) dilengkapi , maka persamaan reaksi itu akan mengandung ....
10 H+ dan 5 H2O
8 OH– dan 4 H2O
8 H+ dan 4 H2O
4 OH– dan 2 H2O
4 H+ dan 2 H2O
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Proses berikut yang tidak melibatkan reaksi redoks adalah … .
Peristiwa fotosintesis pada tumbuhan
Peristiwa korosi (perkaratan logam)
Pengisian Bateray Handphone
Dampak hujan asam terhadap logam
Pelarutan garam dapur
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Bilangan oksidasi alumunium dalam Al2O3 adalah ….
-1
+1
+2
+3
+6
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berikut ini beberapa pernyataan yang berhubungan dengan proses elektrokimia.
Pernyataan yang benar adalah :
Terjadi reaksi oksidasi pada katode
Pada sel elektrolisis, anode adalah kutub positif
Terjadi reaksi reduksi pada anode
Pada sel volta diperlukan arus listrik
Katode adalah elektrode negatif pada sel volta
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berdasarkan gambar di samping, notasi sel yang tepat untuk sel Volta tersebut adalah ….
Sn+2/Sn // Cu+2/Cu
Sn/Sn+2 // Cu+2/Cu
Cu+2/Cu // Sn+2/Sn
Cu/Cu+2 // Sn+2/Sn
Sn/Sn+2 // Cu/Cu+2
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