
Hukum Faraday_5
Presentation
•
Chemistry
•
12th Grade
•
Easy
Susi Respati Setyorini
Used 1+ times
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1 Slide • 5 Questions
1
by Respati 27
2
Multiple Choice
Proses pemurnian tembaga dilakukan dengan cara elektrolisis. Tembaga kotor dijadikan sebagai anoda, sedangkan tembaga murni sebagai katoda. Arus sebesar 10 Ampere dialirkan pada sel elektrolisis tembaga. Dari hasil elektrolisis diperoleh endapan Cu di katoda sebanyak 12,70 gram. Lamanya waktu yang diperlukan (Ar Cu = 63,5; IF = 96.500 coulomb) adalah....
9.650 detik
7.720 detik
5.790 detik
3.860 detik
1.930 detik
3
Multiple Choice
Elektrolisis larutan Pb(NO3)2 dengan elektrode karbon menghasilkan 2,07 gram endapan Pb. Jika Ar Pb = 207 g/mol maka muatan listrik yang digunakan sebesar....
0,01 Faraday
0,02 Faraday
0,04 Faraday
0,10 Faraday
0,20 Faraday
4
Multiple Choice
Satu liter larutan AgNO3 dielektrolisis menggunakan elektrode karbon. Apabila saat eletrolisis dilewatkan muatan listrik 965 coulomb, maka pH larutan adalah....
1 – log 2
2 – log 2
2 – log 1
13 + log 2
12 + log 2
5
Multiple Choice
Sejumlah arus listrik mengendapkan 45 gram aluminium dari leburan Al2O3. Jika arus listrik tersebut dilewatkan melalui leburan MgCl2, maka logam magnesium yang diendapkan sebanyak…. (Ar Al = 27; Mg = 24)
30 gram
45 gram
60 gram
75 gram
90 gram
6
Multiple Choice
Pada elektrolisis larutan Na2SO4 encer, di anoda terjadi oksidasi air. Bila digunakan muatan listrik sebesar 24125 C dan 1 F = 96500 C/mol elektron, maka volume gas O2
yang terbentuk pada keadaan STP adalah....
1,4 L
2,8 L
5,6 L
11,2 L
22,4 L
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