
Penyepuhan Logam

Quiz
•
Chemistry
•
12th Grade
•
Easy
Used 11+ times
FREE Resource
4 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Perhatikan gambar penyepuhan kunci besi dengan tembaga diatas!
Reaksi elektrolisis yang terjadi di katode pada penyepuhan kunci besi oleh tembaga menggunakan larutan CuSO4 tersebut adalah ....
Cu(s) → Cu2+(aq) + 2e-
Cu2+(aq) + 2e- → Cu(s)
4H+(aq) + 4e- → 2H2(g)
2H2O(l) → 4H+(aq) + O2(g) + 4e-
CuSO4(aq) → Cu2+(aq) + SO42-(aq)
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Perhatikan gambar penyepuhan kunci besi dengan tembaga diatas!
Reaksi elektrolisis yang terjadi di anoda pada penyepuhan kunci besi oleh tembaga menggunakan larutan CuSO4 tersebut adalah ....
Cu(s) → Cu2+(aq) + 2e-
Cu2+(aq) + 2e- → Cu(s)
4H+(aq) + 4e- → 2H2(g)
2H2O(l) → 4H+(aq) + O2(g) + 4e-
CuSO4(aq) → Cu2+(aq) + SO42-(aq)
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada penyepuhan logam besi dengan tembaga digunakan larutan CuSO4 dengan arus 10A selama 965 detik. Massa tembaga yang melapisi besi tersebut adalah ....
(Ar Cu = 63,5)
0,3175 gram
0,6350 gram
3,1750 gram
6,3500 gram
31,7500 gram
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika arus listrik yang digunakan dalam suatu proses penyepuhan besi dengan tembaga adalah 1A dan massa tembaga yang melapisi besi tersebut sebesar 3,175 gram, maka waktu yang diperlukan untuk melakukan penyepuhan tersebut adalah ....
(Ar Cu = 63,5)
9,65 detik
96,5 detik
965 detik
9650 detik
96500 detik
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