
Potensial Elektroda Standar dan Persamaan Ners

Quiz
•
Chemistry
•
12th Grade
•
Easy
Alya Zahroh
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Suatu sel volta terdiri atas elektrode Cu dalam larutan CuSO4 1M dan elektrode hidrogen standar. Voltmeter menunjuk angka 0,34 volt. Berapakah harga potensial elektrode Cu?
A. 1,34
B. 0,34
C. 0,66
D. 1,66
E. 2,7
2.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Diketahui:
E° Ag+/Ag = + 0,80 V
E° Cu2+/Cu = + 0,34 V
E° Pb2+/Pb = – 0,13 V
E° Fe2+/Fe = – 0,44 V
E° Zn2+/Zn = – 0,76 V
Manakah dari reaksi sel berikut yang mempunyai potensial sel terbesar?
A. Pb2+ /Pb// Zn/Zn2+
B. Cu2+ /Cu// Fe/Fe2+
C. Ag+/Ag// Fe/Fe2+
D. Ag+/Ag// Zn/Zn2+
E. Fe2+/Fe// Zn/Zn2+
3.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Potensial yang dihasilkan oleh reaksi Mg + NiCl2 → MgCl2 + Ni adalah …
a. -2,12 volt
b. +2,12 volt
c. +1,06 volt
d. -2,62 volt
e. +0,80 volt
4.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Bila diketahui potensial elektrode standar di atas :
Pasangan sel volta yang akan menghasilkan potensial sel sebesar 0,86 V adalah …
a. ln|ln3+||3Ag+|3Ag
b. Mg|Mg2+||Mn2+|Mn
c. Mn|Mn2+||2Ag+|Ag
d. 2ln|2ln3+||3Mn2+|3Mn
e. 3Mn|3Mn2+||2ln3+|2ln
5.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Tentukan potensial sel volta yang terdiri atas elektrode Ni dan Pb tersebut adalah ....
A. 0,12 V
B. -0,12
C. 0,38
D. -0,38
E. 0,13
6.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Ion Al3+, Sn2+, dan Sn4+ memiliki konsentrasi berturut-turut 0,1 M ; 0,01 M ; 0,5 M. Ketiga ion itu dirangkai pada susunan sel volta (diagram volta) dengan jembatan garam berisi garam halit. Jika diketahui Eº Al | Al3+ = -1,66 V dan Eº Sn4+ | Sn2+ = +0,154 V, nilai potensial sel volta pada rangkai tersebut adalah … (log 8 = 0,9)
A. 1,814 V
B. 3,699 V
C. 1,885 V
D. 0,071 V
E. 3,628 V
7.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
Potensi oksidasi standar elektroda Ni/Ni 2+ adalah 0,3 V. Jika potensial oksidasi ini digabungkan dengan elektroda hidrogen dalam larutan asam, pada pH larutan berapa ggl yang diukur menjadi nol pada 25°C? (Asumsikan [Ni 2+ ] = 1M)
A. 5,08
B. 4
C. 4,5
D. 5,25
E. 5
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