KIMIA XII

KIMIA XII

2nd - 3rd Grade

10 Qs

quiz-placeholder

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KIMIA XII

KIMIA XII

Assessment

Quiz

Chemistry

2nd - 3rd Grade

Practice Problem

Medium

Created by

Yuniarti Nursanti

Used 1+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Suatu unsur/anion dapat mengalami reduksi jika....

Dapat menerima elektron

dapat melepas elektron

Dapat melepas H+

Dapat menerima H+

Dapat melepas oksigen

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Bilangan oksidasi dari Fe, H2, O2, P4 dan Sb adalah....

- 2

- 1

0

+ 2

+ 3

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pada reaksi redoks :

H2O2(aq) + Cr(OH)4 → CrO32−

Oksigen dalam setengah reaksi : H2O2 → CrO42−mengalami perubahan bilangan oksidasi dari....

0 → -2

+2 → -2          

+1 → -2

-1 → -2

-2 → -2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fungsi jembatan garam dalam sel volta adalah...

  Menambah muatan positif

Mengurangi muatan negatif

Menjaga keseimbangan kation dan anion

a.    Menstabilkan reaksi tetap berlangsung

memperlancar masuknya elektron

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aluminium dapat juga berkarat, rumus kimia karat Aluminium adalah....

AlO

AlO2

AlO3

Al2O3.xH2O

Al3O2.xH2O

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Dari data reaksi setengah sel dengan Eo sbb:

Pb2+ + 2e à Pb      Eo = - 0,13

Cu2+ + 2e à Cu     Eo = + 0,34

Sn2+ + 2e à Sn      Eo = - 0,14

Mg2+ + 2e à Mg    Eo = - 2,38

Fe2+ + 2e à Fe       Eo = - 0,43

Ni2+ + 2e à Ni       Eo = - 0,23

Logam yang dapat mencegah  korosi pada pipa yang terbuat dari besi adalah....

Mg

Cu

Sn

Pb

Ni

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aluminium dapat juga berkarat, rumus kimia karat Aluminium adalah....

AlO

AlO3

AlO2

Al2O3.xH2O

Al3O2.xH2O

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