
sel volta dan sel elekrolisis
Authored by Umu Kimia]
Chemistry
3rd Grade
Used 5+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pernyataan yang benar tentang Anoda dan Katoda
anoda kutub positif
katoda kutub negatif
anoda tempat oksidasi
katoda tempat oksidasi
katoda dan anoda tempat reaksi oksidasi
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sel volta yang terdiri dari elektrode Cu dan Ag. EoCu2+/Cu = +0,34 Volt dan Eo Ag+/Ag = +0,80 volt, Pernyataan yang benar dari informasi tersebut adalah...
Cu sebagai kutub negatif
Cu mengalami reduksi
Ag mengalami oksidasi
Cu sebagai katoda
Cu maupun Ag tidak mengalami reaksi
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Zn2+ + 2e → Zn E° = – 0,76 volt
Cu2+ + 2e → Cu E° = + 0,34 volt
Potensial sel untuk reaksi Zn + Cu2+ → Zn2+ + Cu adalah ...
+0,42 volt
-0,42 volt
+1,10 volt
-1,10 volt
+1,11 volt
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reaksi yang terjadi pada sel volta
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Perhatikan gambar diatas!
Reaksi yang terjadi di katoda adalah ....
K+(aq) + e → K(s)
4OH−(aq) → 2H2O(l) + O2(g) + 4e
2I−(aq) → I2(s) + 2e
2H2O(l) + 2e → H2(g) + 2OH−(aq)
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pada proses elektrolisis larutan CdSO4 dengan elektroda inert, reaksi yang terjadi pada elektroda positif adalah ....
Cd2+ + 2e -----> Cd
2H2O + 2e ------> 2OH- + H2
2H2O ------> 4H+ + O2 + 4e
Ni ------> Ni2+ + 2e
4OH- -----> 2H2O + O2 + 4e
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pada reaksi elektrolisis larutan NiSO4 dengan elektroda Au. Reaksi yang terjadi pada anoda adalah ….
Ni2+(aq) + 2e -----> Ni(s)
Au(aq) ------> Au2+(aq) + e
Ni(s) -----> Ni2+(aq)+ 2e
2 H2O(l) + 2e ------> H2(g)+ 2 OH–(aq)
2 H2O(l) -------> 4 H+(aq) + O2(g) + 4e
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