Diketahui potensial elektrode Seng dan tembaga sebagai berikut :
Zn2+ + 2e → Zn E͒ = -0,76 Volt
Cu2+ + 2e → Cu E͒ = +0,34 Volt
Besarnya Eosel agar reaksi dapat berlangsung adalah ....... Volt
SEL VOLTA DAN SEL ELEKTROLISIS
Quiz
•
Chemistry
•
12th Grade
•
Hard
Abdul Afif
Used 116+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Diketahui potensial elektrode Seng dan tembaga sebagai berikut :
Zn2+ + 2e → Zn E͒ = -0,76 Volt
Cu2+ + 2e → Cu E͒ = +0,34 Volt
Besarnya Eosel agar reaksi dapat berlangsung adalah ....... Volt
-1,10
+1,10
+0,76
-0,76
+2,00
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Diketahui data potensial reduksi standar :
Zn2+ + 2e → Zn Eo = -0,76 V
Mg2+ + 2e → Mg Eo = -2,38 V
Cu2+ + 2e → Cu Eo = +0,34 V
Notasi sel yang dapat berlangsung spontan adalah....
Fe |Fe2+ ||Zn2+ |Zn
Zn |Zn2+ ||Mg2+ |Mg
Cu |Cu2+ ||Zn2+ |Zn
Cu |Cu2+ ||Fe2+ |Fe
Mg |Mg2+ ||Cu2+ |Cu
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui data potensial reduksi standar :
Sn2+ + 2e → Sn Eo = -0,14 V
Cu2+ + 2e → Cu Eo = +0,34 V
Pb2+ + 2e → Pb Eo = -0,13 V
Ag+ + e → Ag Eo = +0,80 V
Notasi sel yang dapat berlangsung spontan adalah.....
Cu |Cu2+ ||Sn2+ |Sn
Pb |Pb2+ ||Sn2+ |Sn
Cu |Cu2+ ||Pb2+ |Pb
Ag |Ag+ ||Cu2+ |Cu
Cu |Cu2+ ||Ag+ |Ag
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Diketahui beberapa data sebagai berikut :
Sn2+ + 2e → Sn Eo = -0,14 V
Cu2+ + 2e → Cu Eo = +0,34 V
Notasi sel yang dapat berlangsung adalah....
Sn |Sn2+ ||Cu2+ |Cu
Cu2+ |Cu ||Sn2+ |Sn
Cu2+|Cu ||Sn |Sn2+
Sn |Sn2+ ||Cu2+ |Cu
Sn2+ |Sn ||Cu2+ |Cu
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui potensial reduksi standar berikut :
Ba2+ + 2e → Ba Eo = -2,90 V
Cd2+ + 2e → Cd Eo = -0,40 V
Cu2+ + 2e → Cu Eo = +0,34 V
Ag+ + e → Ag Eo = +0,80 V
Pt2+ + 2e → Pt Eo = +1,2 V
Reaksi yang tidak berlangsung spontan ialah......
Ba |Ba2+ ||Cd2+ |Cd
Cu |Cu2+ ||Ag+ |Ag
Ag |Ag+ ||Pt2+ |Pt
Ag |Ag+ ||Cu2+ |Cu
Ba |Ba2+ ||Ag+ |Ag
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan reaksi dibawah ini.
Ag+ + e → Ag Eo = +0,80 V
Fe2+ + 2e → Fe Eo = -0,44 V
Zn2+ + 2e → Zn Eo = -0,76 V
Mg2+ + 2e → Mg Eo = -2,38 V
Cu2+ + 2e → Cu Eo = 0,34 V
Dari data diatas, logam yang paling efektif untuk melindungi pipa besi terhadap korosi ialah....
Ag dan Cu
Mg dan Zn
Ag dan Mg
Cu dan Mg
Zn dan Ag
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bila diketahui potensial elektroda standar :
Al3+ (aq) + 3e ----- Al (s) E° = -1,76 volt
Zn2+ (aq) + 2e ------ Zn (s) E° = -0,76 volt
Fe2+ (aq) + 2e ------ Fe (s) E° = -0.44 volt
Cu2+ (aq) + 2e ------ Cu (s) E° = +0,34 volt
Bagan sel volta yang E° selnya paling besar adalah ….
Al/Al3+//Zn2+/Zn
Fe/Fe2+//Al3+/Al
Zn/Zn2+//Cu2+ /Cu
Al/Al3+//Cu2+/Cu
Al3+/Al//Cu2+/Cu
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