SEL VOLTA DAN KOROSI-UH 2

SEL VOLTA DAN KOROSI-UH 2

12th Grade

10 Qs

quiz-placeholder

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SEL VOLTA DAN KOROSI-UH 2

SEL VOLTA DAN KOROSI-UH 2

Assessment

Quiz

Chemistry

12th Grade

Practice Problem

Medium

Created by

Era Pd.

Used 36+ times

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10 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Penulisan lambang sel yang tepat dari gambar sel tersebut adalah . . .

Cu(s) | Cu2+(aq) || Zn(s) | Zn2+(aq)

Zn(s) | Zn2+(aq) || Cu2+(s) | Cu (aq)

Cu2+(s) | Cu(aq) || Zn2+(s) | Zn(aq)

Zn2+(s) | Zn(aq) || Cu(s) | Cu2+ (aq)

Zn(s) | Zn2+(aq) || Cu(s) | Cu2+ (aq)

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Diketahui data potensial reduksi berikut:

E0 Ca2+|Ca = -2,87 V

E0 Mg2+|Mg = -2,37 V

E0 Pb2+|Pb = -0,13 V

E0 Au2+|Au = +1,50 V

Reaksi yang dapat berlangsung adalah . . .

Mg(s) + Ca2+(aq) -> Mg2+(aq) + Ca(s)

Pb(s) + Mg2+(aq) -> Pb2+(aq) + Mg(s)

Pb+(aq) + Au3+(aq) -> Pb(s) + Au(s)

Ca(s) + Mg(s) -> Ca2+(aq) + Mg2+(aq)

Mg(s) + Pb2+(aq) -> Mg2+(aq) + Pb(s)

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Diketahui potensial reduksi:

Fe2+(aq) + 2e- -> Fe(s) E0 = -0,44 V

Al3+(aq) + 3e- -> Al(s) E0 = -1,66 V

maka potensial sel untuk reaksi:

3Fe2+(aq) + 2Al(s) -> 3Fe(s) + 2Al3+(aq) adalah . . .

-1,22 V

+1,22 V

+2,0 V

-2,0 V

-2,1 V

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Diketahui potensial reduksi standar:

Fe3+|Fe = +0,77 V

Cu2+|Cu = +0,34 V

Zn2+|Zn = -0,76 V

Mg2+|Mg = -2,37 V

Di antara reaksi berikut yang memiliki potensial sel terbesar adalah . . .

Zn(s) + Cu2+(aq) -> Zn2+(aq) + Cu(s)

Zn(s) + 2Fe3+(aq) -> Zn2+(aq) + 2Fe2+(aq)

Mg(s) + 2Fe3+(aq) -> Mg2+(aq) + 2Fe2+(aq)

Cu(s) + Mg2+(aq) -> Cu2+(aq) + Mg(s)

2Fe2+(s) + Cu2+(aq) -> 2Fe3+(aq) + Cu(s)

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Diketahui potensial standar untuk reaksi sel berikut:

Zn(s) + Fe2+(aq) -> Zn2+(aq) + Fe(s) E sel = 0,32 V

Zn(s) + Ag+(aq) -> Zn2+(aq) + Ag(s) E sel = 1,56 V

Fe(s) + Ag2+(aq) -> Fe2+(aq) + Ag(s) E sel = 0,24 V

Berdasarkan data potensial tersebut, dapat disimpulkan bahwa urutan ketiga logam tersebut berdasarkan kekuatan pereduksi yang semakin menurun adalah . . .

Ag, Fe, Zn

Ag, Zn, Fe

Fe, Zn, Ag

Fe, Ag, Zn

Zn, Fe, Ag

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Gas-gas buangan industri yang dapat menyebabkan korosi adalah . . .

O2, N2

CO, N2

CO2, CO

CO, H2O

SO2, NO2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Diketahui potensial elektrode standar (E0) unsur-unsur:

P2+(aq) + 2e- -> P(s) E0 = -2,37 V

Q3+(aq) + 3e- -> Q(s) E0 = -1,66 V

R2+(aq) + 2e- -> R(s) E0 = -0,28 V

Fe2+(aq) + 2e- -> Fe(s) E0 = -0,44 V

S2+(aq) + 2e- -> S(s) E0 = -0,13 V

T2+(aq) + 2e- -> T(s) E0 = +0,34 V

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