REVIEW PTS

REVIEW PTS

11th Grade

60 Qs

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REVIEW PTS

REVIEW PTS

Assessment

Quiz

Chemistry

11th Grade

Practice Problem

Medium

Created by

Nugroho Putra

Used 8+ times

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60 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Ke dalam 200 mL larutan 0,03 M asam asetat

(Ka = 1,2 x 10-5) dimasukkan 300 mL larutan 0,01 M kalsium hidroksida. Setelah dicampurkan pH larutan tersebut adalah ….

a. 5,5

b. 6 – 1/2 log 5

c. 7

d. 8,5

e. 8 + 1/2 log 5

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Sebanyak 0,144 gram natrium benzoat C6H5COONa dilarutkan dalam air sampai volume larutan 250 mL, maka pH larutan garam tersebut adalah ….

(Ka asam benzoat = 4 x 10-5 , Kw = 1 x 10-14 )

a. 6 – log 1

b. 7 – log 5

c. 7 + log 5

d. 8 + log 1

e. 8 + log 2

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

A

B

C

D

E

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Terdapat beberapa garam bila dilarutkan dalam air akan terhidrolisis total, seperti di bawah ini.

(1) CH3COONH4, Ka=1,8x10-5, Kb=1,8x10-5

(2) NH4F, Ka=7x10-4 ; Kb=1,8x10-5

(3) HCOONH4, Ka=1,7x10-4;Kb=1,8x10-5

(4) NH4CN, Ka=5x10-10 ; Kb=1,8x10-5

(5) N2H4F, Ka=7x10-4 ; Kb=1x10-6

Garam-garam di atas yang memiliki pH=7 adalah ....

a. (1)

b. (2)

c. (3)

d. (4)

e. (5)

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Campuran larutan berikut ini yang mengalami hidrolisis total adalah ….

a. 50 mL KOH 0,2 M dan 50 mL HBr 0,2 M

b. 35 mL NaOH 0,2 M dan 70 mL CH3COOH 0,1 M

c. 40 mL CH3COOH 0,2 M dan 80 mL NH4OH 0,1 M

d. 250 mL NH4OH 0,1 M dan 50 mL HF 0,2 M

e. 50 mL Ca(OH)2 0,2 M dan 200 mL CH3COOH 0,1 M

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Garam ammonium sulfat, (NH4)2SO4 jika dilarutkan ke dalam air akan bersifat asam. Reaksi hidrolisis yang menunjukkan sifat garam tersebut adalah ....

a. H+ + SO42— → H2SO4

b. NH4+ + OH → NH4OH

c. NH4+ + H2O → NH4OH + H+

d. SO42— + H2O → H2SO4 + OH

e. NH4OH + H2SO4 → (NH4)2SO4 + H2O

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

a. 1 dan 3

b. 1 dan 4

c. 1 dan 5

d. 2 dan 5

e. 3 dan 4

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