
elektrokimia
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
Standards-aligned
Wiwik Widyastuti
Used 2+ times
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10 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Diketahui potensial electrode standar standar sebagai berikut :
Zn2+ + 2e → Zn Eo = - 0,76 volt
Cu2+ + 2e → Cu Eo = + 0,34 volt
Tentukan potensial sel reaksi redoks yang terjadi!
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Diketahui: Ca2+ + 2e → Ca Eo = - 2,76 volt
Cu2+ + 2e → Cu Eo = + 0,34 volt
Apakah reaksi berikut dapat berlangsung spontan/tidak ?
Ca │Ca2+ ││ Cu2+ │ Cu
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui
Ag+ + e → Ag Eo = + 0,80 volt
Zn2+ + 2e → Zn Eo = - 0,76 volt
Jika logam Zn dan Ag digunakan sebagai electrode, pernyataan yang benar adalah ...
Ag sebagai katoda agar reaksi berlangsung spontan
Ag sebagai Anoda agar reaksi berlangsung spontan
Zn sebagai katoda agar reaksi berlangsung spontan
Harga Eo sel reaksi redok yang terjadi adalah 0,16 volt
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Tentukan gas yang dihasilkan di katode pada elektrolisis Larutan CaCl2 dengan electrode Pt
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Tentukan gas yang dihasilkan di Anoda pada elektrolisis Larutan KCl dengan electrode Pt
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Diberikan reaksi sebagai berikut
Zn (aq) + 2e- →Zn(s)
Jika arus sebesar 10 ampere mengalir ke katode selama 5 menit, berapa banyak Zn yang terbentuk? (Ar Zn = 65)
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Sejumlah arus listrik alirkan melalui larutan AgNO3 dan larutan ZnSO4 . Bila logam perak yang diendapkan sebanyak 21, 6 gram, tentukan banyaknya logam tembaga yang mengendap? Ar Ag=108 dan Ar Zn= 65)
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