
Tes elektrolisis
Quiz
•
Chemistry
•
3rd Grade
•
Medium
ilham mahardika
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Katoda (–) : Ni2+ (aq) + 2e- → Ni(s)
Anoda (+) : 2H2O (l) → O2(g) + 4 H+(aq) + 4e-
Reaksi sel : Ni2+ (aq) + 2H2O (l) → O2 (g) + 2 H2 (g) + 4 H+ (aq) + Ni(s)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan reaksi elektrolisis berikut ini !
Elektrolisis larutan NaCl dengan elekteoda C
Elektrolisis larutan K2SO4 dengan elekteoda C
Elektrolisis leburan CaCl2 dengan elekteoda Pt
Elektrolisis leburan CuCl2 dengan elekteoda C
Reaksi yang sama terjadi di katoda terdapat pada reaksi nomor ….
(1) dan (2)
(1) dan (3)
(1) dan (4)
(2) dan (3)
(3) dan (4)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan wacana berikut!
Sendok logam yang terbuat dari Zink akan disepuh dengan logam tembaga. Reaksi yang terjadi di katoda adalah ....
Cu+2(aq) + Zn(s) → Cu(s) + Zn+2 (aq)
Zn (s) → Zn+2 (ag) + 2e
Zn+(aq) + 2e → Zn (s)
Cu (s) → Cu+2 (aq) + 2e
Cu+2 (aq) + 2e → Cu (s)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada elektrolisis larutan KI dengan elektrode Pt, di katode terjadi peristiwa reduksi dengan reaksi....
2 I- → I2 + 2e-
2 H2O → 4 H+ + O2 + 4 e-
2 H2O + 2 e- → H2 + 2 OH-
K → K+ + e-
K+ + e- → K
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hasil-hasil yang diperoleh dalam elektrolisis larutan KNO3 adalah ....
kalium di ruang katode, NO2 di ruang anoda
kalium di ruang katode, gas oksigen di anoda
kalium di ruang katode, gas hidrogen di ruang anoda
gas hidrogen di ruang katode, gas oksigen di ruang anoda
gas hidrogen dan gas oksigen di ruang katode, kalium di ruang anode
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika leburan NaCl dielektrolisis maka ....
natrium di katode, klorin di anode
natrium di katode, oksigen di anode
hidrogen di katode, oksigen di anode
hidrogen di katode, klorin di anode
natrium dan hidrogen di katode, klorin di anode
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika larutan MgCl2 dielektrolisis, zat yang akan terbentuk di anoda adalah....
Mg (s)
Cl2 (g)
H2 (g)
O2 (g)
HClO
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