
REVIEW PTS
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
Nugroho Putra
Used 8+ times
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60 questions
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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
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
a. 1 dan 3
b. 1 dan 4
c. 1 dan 5
d. 2 dan 5
e. 3 dan 4
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