Reaksi Redoks
Quiz
•
Chemistry
•
12th Grade
•
Hard
Rina Endriani
Used 6+ times
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28 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Untuk reaksi redoks :
aMnO2(s) + bHCl(aq) → cMnCl2 (aq) + dCl2(g) + eH2O(l)
setelah disetarakan maka nilai koefisien : a,b,c,d dan e berturut – turut adalah….
1, 4,1,1, dan 2
1, 3,1,1, dan 2
1, 2,1,1, dan 2
2, 1,2,2, dan 1
2, 1,2,3, dan 1
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diagram sel yang tepat untuk rangkaian sel volta pada gambar tersebut adalah ....
Al| Al3+||Sn2+|Sn
Al3+|Al||Sn|Sn2+
Sn2+| Sn || Al| Al3+
Sn2+|Sn|| Al3+| Al
Sn|Sn2+||Al3+|Al
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui harga potensial elektroda dalam keadaan standar:
Ag+/ Ag Eo = + 0,80 Volt
Mg2+/ Mg Eo = - 2,38 Volt
Diagram sel yang tepat untuk berlansungnya reaksi tersebut adalah....
Ag/Ag+ // Mg/Mg2+
Ag+ / Ag // Mg/Mg2+
Mg/Mg2+ // Ag+/ Ag
Mg/Mg2+// Ag/Ag+
Ag/Ag+ // Mg2+/Mg
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui data potensial elektroda:
Al3+/Al = - 1,66 Volt
Ni2+/Ni = - 0,25 Volt
Harga Eo sel untuk reaksi sel volta:
2Al + 3Ni2+ → 3Ni + 2Al3+
adalah...
4,48 Volt
2,57 Volt
2,42 Volt
1,91 Volt
1,41 Volt
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Salah satu unsurnya mempunya bilangan oksidasi + 5 terdapat pada senyawa….
HClO4
KNO3
Na2CrO4
NH4+
MnO4-
6.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
Fungsi jembatan garam dalam sel Volta adalah....
Menambah muatan positif
Menambah muatan negatif
Menjaga keseimbangan kation dan anion
Mengurangi muatan positif
Mengurangi muatan negatif
7.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Reaksi yang terjadi pada sel tersebut adalah....
E° Ag = +0,80 V E° Zn = -0,76 V
Zn(s) + 2Ag+(aq) → Zn2+(aq) + 2Ag(s) E°sel = +1,56 V
2Ag+(aq) + Zn(s) → 2Ag(s) + Zn2+(aq) E°sel = +2,36 V
Zn2+(aq) + 2Ag(s) → Zn(s) + 2Ag+(aq) E°sel = +0,04 V
Zn2+(aq) + 2Ag(s) → Zn(s) + 2Ag+(aq) E°sel = +1,56 V
Zn(s) + 2Ag(s) → Zn2+(aq) + 2Ag+(aq) E°sel = +1,56 V
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