Sel Elektrokimia

Sel Elektrokimia

2nd Grade

25 Qs

quiz-placeholder

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Sel Elektrokimia

Sel Elektrokimia

Assessment

Quiz

Chemistry

2nd Grade

Practice Problem

Easy

Created by

Siti Rohayati

Used 8+ times

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Pada elektrolisis larutan CuSO4 dengan elektrode Pt, dialirkan arus listrik 2 Ampere selama 965 detik (Ar Cu=63,5) maka banyaknya logam tembaga yang dihasilkan … mg

317,5

635,0

952,5

1.270

1.905

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Berapakah massa logam perak yang diendapkan jika arus listrik sebesar 5 Ampere dialirkan kedalam larutan AgNO3 selama 2 jam ? (Ar Ag = 108)

40,92

24,90 gram

29,40 gram

40,29 gram

49,20 gram

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Pada elektrolisis leburan Al2O3 ( Ar O = 16, Al = 27 ) diperoleh 0,225 gram Al. Jumlah Arus Listrik yang diperlukan adalah …

221,9 Coulomb

804,0 Coulomb

025,9 Coulomb

412,5 Coulomb

685,0 Coulomb

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Reaksi : Potensial yang dihasilkan oleh reaksi : Mg + NiCl2 → MgCl2 + Ni

Eo red Mg2+/Mg = -2,37 volt

Eo red Ni2+/Ni = -0,25 volt

-2,12 volt

+2,12 volt

+1,06 volt

-2,62 volt

+0,80 volt

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Diketahui :

Eo red Ag+/Ag = +0,80 volt

Eo red Cd2+/Cd = -0,40 volt

Potensial sel yang dihasilkan dari pasangan elektrode Cd dengan Ag adalah …

1,20 V

0,44 V

0,76 V

0,80 V

1,20 V

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Berapa faraday yang diperlukan untuk mereduksi 60 gram ion kalsium menjadi logam kalsium …. (Ar = Ca = 40)

1,0

1,5

2,0

3,0

4,0

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Bila kedalam larutan NiSO4 dialirkan listrik sebesar 0.1 F, dan Ar Ni = 59, maka dikatode akan didapat logam Ni seberat …

59,00 g

29,50 g

14,75 g

5,90 g

2,95 g

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