SEL VOLTA
Interactive Video
•
Chemistry
•
12th Grade
•
Medium
dwi irianti
Used 1+ times
FREE Resource
6 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Berikut ini adalah data potensial reduksi standar (E0) untuk beberapa kation.
Au3+ + 3e– → Au E0 = +1,50 V
Sn2+ + 2e– → Sn E0 = –0,14 V
Ca2+ + 2e– → Ca E0 = –2,87 V
Co2+ + 2e– → Co E0 = –0,28 V
Sel Volta yang memiliki potensial sel paling besar adalah ....
Co|Co2+ || Au3+|Au
Ca|Ca2+ || Au3+|Au
Au|Au3+ || Ca2+|Ca
Au|Au3+ || Sn2+|Sn
Ca|Ca2+ || Sn2+|Sn
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Diketahui beberapa potensial reduksi standar (E0) sebagai berikut.
Ni2+(aq) + 2e– → Ni(s) E0 = –0,25 V
Pb2+(aq) + 2e– → Pb(s) E0 = –0,13 V
Cu2+(aq) + 2e– → Cu(s) E0 = +0,34 V
Ag+(aq) + e– → Ag(s) E0 = +0,80 V
ClO–(aq) + 2H2O(l) + 2e– → 2OH– (aq) + Cl– (aq) E0 = +0,90 V
Au3+(aq) + 3e– → Au(s) E0 = +1,50 V
Jika pada elektrode negatif terdapat ion Cl– dan ClO–, elektrode positif yang tepat untuk menghasilkan sel Volta adalah ....
Ni2+|Ni
Pb2+|Pb
Cu2+|Cu
Ag3+|Ag
Au3+|Au
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Berikut adalah data potensial reduksi standar (E0) untuk beberapa kation.
Sn2+ + 2e– → SnE0 = –0,14 V
Mg2+ + 2e– → MgE0 = –2,37 V
Ni2+ + 2e– → NiE0 = –0,25 V
Fe2+ + 2e– → FeE0 = –0,44 V
Cu2+ + 2e– → CuE0 = +0,34 V
Logam yang dapat melindungi besi terhadap korosi adalah ....
Sn
Mg
Fe
Ni
Cu
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Berikut ini adalah data potensial reduksi standar (E0) untuk beberapa kation.
Co2+ + 2e– → CoE0 = –0,28 V
Cr3+ + 3e– → CrE0 = –0,74 V
Cu2+ + 2e– → CuE0 = +0,34 V
Pb2+ + 2e– → PbE0 = –0,13 V
Sel Volta yang memiliki potensial sel paling besar adalah ....
Cu|Cu2+ || Pb2+|Pb
Co|Co2+ || Cr3+|Cr
Cr|Cr3+ || Cu2+|Cu
Cu|Cu2+ || Cr3+|Cr
Pb|Pb2+ || Cr3+|Cr
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada wadah katode suatu sel Volta terdapat beberapa kation dengan potensial reduksi standar (E0) sebagai berikut.
Ag+ + e– → Ag E0 = +0,80 V
Fe2+ + 2e– → Fe E0 = –0,41 V
Cr3+ + 3e– → Cr E0 = –0,74 V
Sn2+ + 2e– → Sn E0 = –0,14 V
Cu2+ + 2e– → Cu E0 = +0,34 V
Berdasarkan data tersebut, logam yang paling mudah terbentuk di katode adalah ....
Ag
Fe
Cr
Sn
Cu
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui potensial reduksi standar (E0) berikut.
Cu2+ + 2e– → Cu E0 = + 0,337 V
AgCl + e– → Ag + Cl– E0 = + 0,222 V
Jika kedua elektrode tersebut disusun sebagai sel Volta, reaksi yang terjadi di katode adalah ....
reduksi ion tembaga(II)
reduksi perak klorida
oksidasi logam tembaga
oksidasi logam perak
pembentukan gas Cl2
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