QUIZ REDOKS DAN SEL ELEKTROKIMIA

Quiz
•
Chemistry
•
Professional Development
•
Hard
Dwi Handayani
Used 5+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Balangan oksidasi kromium yang sama pada pasangan senyawa berikut adalah ….
K2Cr2O7 dan Cr2O3
K2Cr2O7 dan Cr(OH)4
K2CrO4 dan K2Cr2O7
K2CrO4 dan Cr(OH)4
Cr(OH)4 dan Cr2O3
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada reaksi Fe2+ + MnO4 - → Fe3+ + Mn2+, pernyataan yang benar adalah ....
Fe2+ merupakan oksidator
Mn merupakan reduktor
Bilangan oksidasi Mn dari +7 menjadi +2
Bilangan oksidasi Mn dari +2 menjadi +7
Setengah reaksi oksidasinya MnO4 - → Mn2+
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dalam suasana basa, Cl2 mengalami reaksi disproporsionasi menghasilkan ion Cl dan ClO3 - . Perbandingan koefisien ClO3 - terhadap Cl2 yang dihasilkan setelah reaksi setara adalah ….
1/5
1/3
1/1
2/1
1/2
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Perhatikan soal berikut :
Diketahui
Ni2+ + 2 e → Ni EO = - 0,25 v
Pb2+ + 2 e → Pb EO = - 0,13 v
Potensial standar sel volta yang terdiri dari elektroda Ni dan Pb adalah … Volt
- 0,38
- 0,03
+ 0,12
+ 0,25
+ 0,38
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Berdasarkan deret volta, reaksi elektrokimia yang dapat berlangsung secara spontan adalah ….
Sn(s) + Fe2+(aq) → Sn2+(aq) + Fe(s)
Sn2+(aq) + Fe(s) → Sn(s) + Fe2+(aq)
Pb(s) + Zn2+(aq) → Pb2+(aq) + Zn(s)
3Mg2+(aq) + 2Al(s) → 3Mg(s) + 2Al3+(aq)
Pb(s) + 2Ag+(aq) → Pb2+(aq) + 2Ag(s)
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