PENILAIAN TENGAH SEMESTER GANJIL

PENILAIAN TENGAH SEMESTER GANJIL

11th Grade

35 Qs

quiz-placeholder

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PENILAIAN TENGAH SEMESTER GANJIL

PENILAIAN TENGAH SEMESTER GANJIL

Assessment

Quiz

Chemistry

11th Grade

Practice Problem

Hard

Created by

Een Suminar

Used 4+ times

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35 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

Bilangan Oksidasi unsur belerang dalam senyawa Na2S2O3 adalah… .

+5

+4

+3

+2

+1

2.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

Pada masing-masing perubahan berikut, yang merupakan contoh reaksi oksidasi adalah….

Cu2+ menjadi Cu

F2 menjadi F-

Cl- menjadi Cl2

Cr2O72- menjadi CrO42-

H2O menjadi H+

3.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

Bilangan oksidasi unsur Cr dalam senyawa CrO42- adalah… .

+6

+5

+4

+3

+2

4.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

Biloks atom Cl tertinggi di antara senyawa berikut adalah… .

KCl

KClO

CaCl2

KClO3

KClO2

5.

MULTIPLE CHOICE QUESTION

15 mins • 2 pts

Biloks Mn tertinggi terdapat pada senyawa… .

KMnO4

MnO2

K2MnO4

MnCl2

MnS

6.

MULTIPLE CHOICE QUESTION

15 mins • 2 pts

Diketahui beberapa reaksi sebagai berikut:

(1) MnO4 → MnO2

(2) Zn → ZnO2-

(3) 2 CO2 → C2O42-

(4) Cr2O3 → CrO4

Peristiwa reduksi terjadi pada pasangan….

(1) dan (2)

(1) dan (3)

(1) dan (4)

(2) dan (3)

(2) dan (4)

7.

MULTIPLE CHOICE QUESTION

15 mins • 2 pts

Pada reaksi berikut: Cl2 + 2 KOH → KCl + KClO + H2O

Bilangan oksidasi klor berubah dari….

-1 menjadi +1 dan 0

+1 menjadi -1 dan 0

0 menjadi -1 dan -2

-2 menjadi 0 dan +1

0 menjadi -1 dan +1

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