SEL ELEKTROKIMIA 2
Quiz
•
Chemistry
•
12th Grade
•
Medium
Tri Winoko
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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Berdasarkan gambar di samping, notasi sel yang tepat untuk sel Volta tersebut adalah ….
Sn+2/Sn // Cu+2/Cu
Sn/Sn+2 // Cu+2/Cu
Cu+2/Cu // Sn+2/Sn
Cu/Cu+2 // Sn+2/Sn
Sn/Sn+2 // Cu/Cu+2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diketahui potensian standar beberapa sel Volta berikut:
A/A+2 // B+2/B E0sel = +1,46 volt
C/C+2 // D+2/D E0sel = +0,10 volt
C/C+2 // B+2/B E0sel = +0,56 volt
Berdasarkan harga diatas harga potensial standar A/A+2 // D+2/D adalah …. volt
2,12
1,92
1,56
1,00
0,12
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Pada penyepuhan logam besi denggan emas digunakan larutan AuCl3 dan arus sebesar 2 A selama 30 menit. Massa emas yang mengendap di katoda sebesar …. gram. (Ar Au = 197)
197 x 2 x 30 x 60/ 3 x 96.500
197 x 3 x 30 x 60/ 2 x 96.500
3 x 96.500 x 30/ 197 x 2
197 x 30 x 60/ 96.500
197 x 2 x 30/ 3 x 96.500
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Elektrolisis larutan Ni(NO3)2 dan Pb(NO3)2 yang disusun secara seri mengahasilkan endapan Pb sebanyak 2,07 gram. Jika Ar Ni = 59 dan Ar Pb = 207, logam Ni yang mengendap adalah …. gram
0,59
0,87
4,14
6,21
1,17
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Suatu sel volta memiliki elektroda kadimum (E0Cd+2/Cd = - 0,40 volt) dan platina (E0Pt+2/Pt = + 1,20 Volt). Pernyatan yang benar mengenai sel volta tersebut adalah ….
Notasi sel Pt/ Pt+2// Cd+2/Cd
Potensial selnya sebesar 1,60 volt
Platina bertindak sebagai anoda
Reaksi sel : Cd+2 + Pt → Pt+2 + Cd
Elektron mengalir dari platina ke cadmium
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada elektrolisis larutan CuSO4, dihasilkan gas oksigen sebanyak 1,12 liter. Jika pengukuran itu dilakukan pada keadaan standar, arus yang dialirkan sebnyak …. faraday
0,2
0,4
0,6
0,8
1,0
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Elektrolisis larutan NaCl menghasilkan gas hidrogen di katoda sebanyak 5,6 liter. Jika volume hidrogen diukur pada keadaan standard an arus yang digunakan sebesar 5A, elektrolisis dilakukan selama …. detik
4.825
9.650
14.475
96.500
19.300
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