LATIHAN SIAP ASSG
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Easy
Larosa Arupa
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25 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan reaksi asam-basa menurut Bronsted-Lowry berikut:
(1) CH3COOH + HNO2 <===> CH3COOH2+ + NO2-
(2) CH3COOH + NH3<===> CH3COO-dan NH4+
Pernyataan yang benar tentang reaksi di atas adalah…
Pada reaksi 1 CH3COOH bertindak sebagai asam
pada reaksi 1 HNO2 bertindak sebagai basa
pada reaksi 2 NH3 bertindak sebagai asam
CH3COOH dan CH3COOH2+ adalah pasangan basa dan asam konjugasi
HNO2 dan NH3 adalah pasangan asam dan basa konjugasi
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika tetapan asam CH3COOH = 10-5, maka pH larutan CH3COONa 0,01 M adalah ….
7,0
7,5
8,0
8,5
9,0
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapakah konsentrasi H3O+ dalam larutan Ba(OH)2 0,05 M
1 x 10-13 M
5 x 10-10 M
1 x 10-5 M
2 x 10-5 M
5 x 10-2 M
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
1
2
3
4
5
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapakah pH larutan yang diperoleh dengan mencampurkan 50 mL HBr 0,2 M dan 50 mL NaOH 0,4 M ?
2
5
7
10
13
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Asam lemah HA 0,1 M terionisasi dalam air sebanyak 2%. Tetapan ionisasi asam lemah tersebut adalah ….
2 x 10-3
4 x 10-3
2 x 10-4
4 x 10-4
4 x 10-5
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Bila [OH-] dalam larutan 0,2 M HCOOH adalah
2,5 x 10-12, maka harga tetapan ionisasi HCOOH adalah ….
1,25 x 10-11
5 x 10-7
3,2 x 10-6
1,6 x 10-5
8,0 x 10-5
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