
Elektrolisis
Authored by lestari anggriani
Chemistry
KG
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Tuliskan Reaksi Elektrolisis lelehan KI dengan elektroda C
2H2O + 2l- 2 OH- + H2 + I2
2H2O + l2 2 OH- + H2 + 2I-
KI K+ + I-
2H2O + H2 2 OH- + O2 + 2I-
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bila larutan CuSO4 dielektrolisis menggunakan elektroda Fe maka yang terdapat pada reaksi di anoda adalah...
Oksidasi Fe
Oksidasi H2O
reduksi Fe
Reduksi H2O
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mengapa larutan unsur golongan IA, IIA, Al dan Mn tidak dapat tereduksi di katoda?
Karena Eo Oksidasinya lebih kecil dari H2O
Karena letaknya berada disebelah kanan H2O pada deret volta
Karena golongan IA, IIA, Al dan Mn lebih mudah bereaksi dengan air
Karena Eo reduksinya lebih kecil dari H2O
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mengapa pada elektrolisis larutan NaCl tidak dihasilkan endapan logam Na seperti pada elektrolisis lelehan NaCl?
Karena pada larutan NaCl, kandungan logam Na tidak sebanyak yang terdapat pada lelehan
Karena lelehan NaCl tidak mengandung air
Karena pada elektrolisis larutan NaCl, Na tidak tereduksi
Karena pada elektrolisis larutan NaCl, logam Na teroksidasi
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Elektrolisis yang menghasilkan gas H2 ditunjukkan pada gambar ….
1 dan 2
2 dan 3
3 dan 4
1 dan 4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pada reaksi elektrolisis larutan NiSO4 dengan elektroda Ag. Reaksi yang terjadi pada anoda adalah ….
Ag(aq) Ag+(aq) + e
Ni2+(aq) + 2e Ni(s)
2 H2O(l) + 2e H2(g) + 2 OH–(aq)
2 H2O(l) 4 H+(aq) + O2(g) + 4e
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada sel elektrolisis, elektroda-elektroda akan bermuatan ...
Katoda positif, anoda negatif
Katoda negatif, anoda positif
katoda dan anoda bermuatan positif
katoda dan anoda bermuatan negatif
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