
Ulangan Redoks dan Elektrokimia
Authored by Nina Kurniasih
Chemistry
12th Grade
Used 3+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Reduksi 1 mol ion BrO3- menjadi ion Br- membutuhkan elektron sebanyak.... mol
2
4
6
8
10
2.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Sewaktu menyetarakan reaksi : MnO4─ + C2O42─ ® MnO2 + CO32─
yang berlangsung dalam suasana basa, jumlah OH─ yang ditambahkan adalah ....
2 di ruas kanan
4 di ruas kanan
2 di ruas kiri
3 di ruas kiri
4 di ruas kiri
3.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Diketahui potensial reduksi logam sebagai berikut.
A2+ + 2e → A Eo = +0,34 volt
B2+ + 2e → B Eo = -0,76 volt
C2+ + 2e → C Eo = -2,34 volt
Susunan logam A, B, dan C dalam deret volta berdasarkan urutan sifat oksidator yang semakin kuat adalah ...
A-B-C
A-C-B
C-A-B
C-B-A
B-C-A
4.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Potensial sel standar dari:
Cu+ + e- → Cu Eo = +0,52 V
Sn2+ + 2e- → Sn Eo = - 0,14 V
Al3+ + 3e- → Al Eo = - 1,66 V
Ag+ + e- → Ag Eo = + 0,8 V
Reaksi yang berlansung spontan adalah ....
Ag/Ag+ // Al3+ / Al
Al/Al3+ // Sn2+ / Sn
Cu/Cu+ // Al3+ / Al
Cu/Cu+ // Sn2+ / Sn
Ag/Ag+ // Cu+ / Cu
5.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Contoh penerapan sifat koligatif dalam kehidupan sehari-hari yang dapat kita temui diantaranya:
1) larutan infus dimasukkan ke dalam tubuh pasien melalui pembuluh darah; dan
2) air radiator mobil dapat dicampur dengan etilen glikol
Sifat koligatif yang terdapat dalam contoh tersebut secara berurutan adalah ...
penurunan tekanan uap j enuh dan penurunan titik beku
penurunan titik beku dan kenaikan titik didih
tekanan osmotik dan penurunan titik beku
penurunan titik beku dan tekanan osmosis
tekanan osmosis dan penurunan tekanan uap jenuh
6.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Diagram sel yang tepat dari rangkaian sel volta berikut adalah.....
Fe | Fe2+ || Cu | Cu2+
Fe | Fe2+ || Cu2+ | Cu
Cu | Cu2+ || Fe2+ | Fe
Cu | Cu2+ || Fe | Fe2+
Fe|Cu || Fe2+ | Cu2+
7.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Perhatikan gambar rangkaian sel-sel Volta berikut:
data yang sesuai adalah ....
Ag+/Ag//Zn2+/Zn
E °sel positif
Zn/Zn2+//Mg2+/Mg
E °sel negatif
Zn/Zn2+//Ni2+/Ni
E °sel negatif
Mg/Mg2+//Ni2+/Ni
E °sel positif
Ag+/Ag//Mg2+/Mg
E °sel negatif
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