OLIMPIADE SAINS COMPETITION TF8

OLIMPIADE SAINS COMPETITION TF8

9th - 12th Grade

50 Qs

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OLIMPIADE SAINS COMPETITION TF8

OLIMPIADE SAINS COMPETITION TF8

Assessment

Quiz

Science

9th - 12th Grade

Practice Problem

Hard

Created by

DEMA FAKULTAS UIN ARRANIRY

Used 1+ times

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50 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Suatu sampel Ba(OH)2 sebanyak 25 mL dititrasi oleh 100 mL HCL 0,1 M, tentukan konsentrasi sampel tersebut....

a. 0,9 M

b. 0,2 M

c. 2,5 M

d. 1 M

e. 5 M

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sebanyak 0,5 gram sampel KOH (Mr KOH = 56) dilarutkan ke dalam air dan memerlukan 25 mL larutan H2SO4 0,1 M untuk menetralkannya. Maka, kadar KOH dalam larutan tersebut adalah....

a. 50 %

b. 55 %

c. 56 %

d. 60 %

e. 70 %

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Titrasi asam basa merupakan titrasi yang berdasarkan pada reaksi penetralan atau reaksi netralisasi. Oleh karena itu, saat sebanyak 25 mL NaOH 0,5 M dapat dinetralkan oleh HCl 20 mL. Maka, hitunglah molaritas HCl....

a. 0,250 M

b. 0,270 M

c. 0,275 M

d. 0,357 M

e. 0,625 M

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Hitunglah pH larutan jika sebanyak 200 ml NaOH 1 M dicampurkan dengan 300 ml NaOH 0,05 M....

a. 11,56

b. 13,63

c. 13,67

d. 23,75

e. 15

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sebanyak 50 ml larutan KOH 0,2 N direaksikan dengan 50 ml larutan H2SO4 0,005 M. tentukanlah pH larutan tersebut....

a. 12,70

b. 12,60

c. 12, 77

d. 13,07

e. 33, 3

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Tentukan pH dari larutan NH4OH 0,4 M (Kb= 10-5)

Diketahui:

NH4OH 0,4 M (Kb= 10-5)

Mb= 0,4 M = 410-1 M

Kb= 10-5

Berapakah Ph larutan NH4OH 0,4 M ....

a. pH = 10 + log 2

b. pH = 11 + log 2

c. pH = 11 + log 3

d. pH = 11 + log 5

e. pH = 12 + log 2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ion X2- merupakan isoelektronik. Coba tentukan konfigurasi elektron dari unsur X tersebut....

a. 1s2

b. 1s22s2

c. 1s22s22p4

d. 1s22s22p6

e. 1s22s22p6 3s2

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