Latihan Larutan Penyangga
Quiz
•
Chemistry, Science
•
11th - 12th Grade
•
Practice Problem
•
Medium
Fiani Monica Dewi
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15 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Disediakan beberapa larutan berikut masing-masing 25 mL.
1) NH3 0,2 M
2) HNO3 0,1 M
3) HCOOH 0,2 M
4) Ba(OH)2 0,1 M
5) Ba(NO3)2 0,1 M
Larutan penyangga basa dapat dibuat dengan mencampurkan larutan...
1) dan 2)
2) dan 4)
2) dan 5)
3) dan 4)
4) dan 5)
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Pasangan senyawa/ion berikut ini yang berperan menjaga pH cairan intrasel adalah...
CH3COOH dan CH3COO-
HCOOH dan HCOO-
H2PO4- dan HPO42-
H2CO3 dan HCO3-
NH3 dan NH4+
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Suatu larutan dibuat dengan mereaksikan larutan HNO2 0,2 M dan KOH 0,1 M masing-masing 100 mL. Jika Ka HNO2 = 5 x 10-4, pH larutan yang terbentuk adalah...
3
4 - log 5
5
11
10 + log 5
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Larutan NH3 1 M (Kb = 1 x 10-5) dicampur dengan larutan (NH4)2SO4 hingga volumenya 1 L. Jika campuran tersebut membentuk sistem larutan penyangga dengan pH = 11, molaritas (NH4)2SO4 adalah...
0,005 M
0,01 M
0,05 M
0,1 M
0,5 M
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Larutan penyangga dapat dibuat dengan pencampuran berikut, kecuali ….
asam lemah berlebih dan basa kuat
basa lemah dan garamnya
garam asam lemah berlebih dan asam kuat
asam lemah dan basa lemah
basa lemah dan asam konjugasinya
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Campuran di bawah ini merupakan komponen larutan penyangga, kecuali ….
NH4Cl dan NH3
CH3COONa dan CH3COOH
CH3COOH dan NaOH
NaOH dan NaHCO3
NaOH dan HCl
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Berdasarkan tabel di atas, larutan yang mempunyai sifat penyangga adalah ….
I dan II
II dan III
III dan IV
III dan V
IV dan V
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