Elektrokimia
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
Iindriastuti Junisetiawati
Used 3+ times
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22 questions
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1.
OPEN ENDED QUESTION
30 sec • Ungraded
NAMA
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2.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
KELAS
XI AP
XI EA
XI AE
XI TKR
XI AM
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Seorang teknisi akan merancang sel volta dengan dua elektroda berbeda. Ia memiliki pilihan elektroda dan larutan sebagai berikut: 1. Elektroda Fe dalam larutan FeSO4 1 M 2. Elektroda Ag dalam larutan AgNO3 1 M 3. Elektroda Cu dalam larutan CuSO4 1 M 4. Elektroda Zn dalam larutan ZnSO4 1 M Pasangan elektroda dan larutan yang akan menghasilkan potensial sel (tegangan) paling besar adalah kombinasi antara ….
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Sebuah baterai mobil (aki) timbal-asam menggunakan reaksi berikut selama pengosongan: Anoda: Pb(s) + SO42-(aq) → PbSO4(s) + 2e- Katoda: PbO2(s) + 4H+(aq) + SO42-(aq) + 2e- → PbSO4(s) + 2H2O(l) Reaksi sel: Pb(s) + PbO2(s) + 2H2SO4(aq) → 2PbSO4(s) + 2H2O(l) Jika baterai ini dianggap "habis" atau perlu diisi ulang, indikator utama yang menunjukkan kondisi tersebut adalah ….
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Suatu proses elektrolisis leburan MgCl2 dilakukan untuk mendapatkan logam Mg murni. Jika digunakan arus sebesar 20 A selama 5 jam, berapa massa magnesium (Mg) yang dihasilkan di katoda?
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Perhatikan notasi sel volta berikut: Zn(s) | Zn2+(aq, 0,1 M) || Cu2+(aq, 1,0 M) | Cu(s) Jika sel ini beroperasi pada 25oC, pernyataan yang paling tepat mengenai potensial sel (Eosel) adalah ….
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Korosi pada kaleng makanan yang terbuat dari baja (Fe) dilapisi timah (Sn) akan sangat dipercepat jika terdapat goresan pada lapisan timah yang mengekspos baja. Fenomena ini terjadi karena ….
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