SEL VOLTA DAN SEL ELEKTROLISIS

SEL VOLTA DAN SEL ELEKTROLISIS

12th Grade

15 Qs

quiz-placeholder

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SEL VOLTA DAN SEL ELEKTROLISIS

SEL VOLTA DAN SEL ELEKTROLISIS

Assessment

Quiz

Chemistry

12th Grade

Practice Problem

Hard

Created by

Abdul Afif

Used 119+ times

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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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