fun chemistry
Quiz
•
Chemistry
•
University
•
Practice Problem
•
Hard
Endah Ayunda
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Menurut teori asam-basa Bronsted-Lowry, asam didefinisikan sebagai zat yang . . . .
Meningkatkan [H+] bila dimasukkan kedalam H2O
Menurunkan [H+] bila dimaasukkan kedalam H2O
Meningkatkan [OH–] bila dimasukkan kedalam H2O
. . Menerima 1 H+ dari pasangan reaksinya
Memberi 1 H+ dari pasangan reaksinya
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Larutan yang mempunyai pH lebih besar dari 7 adalah . . . .
Gula
Alkohol
Amoniak
Asam nitrat
Asam klorida
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Derajat keasaman dari larutan 100 ml H2SO4 0,02 M adalah . . . .
2 – log 4
2 + log 4
2 + log 2
12 + log 4
12
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapakah konsentrasi ion [OH–] dalam larutan jika konsentrasi H+ = 2 X 10-4 M (Diketahui Kw = 10-14)…….
5 X 10-10
5 X 10-18
0,2 X 10-10
0,2 X 10-8
2 X 10-10
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diantara zat-zat berikut yang memiliki keasaman paling kuat adalah….
HCN (Ka = 6,0 x 10-10)
CH3COOH (Ka = 1,8 x 10-5)
HCl (Ka = 1 x 106 )
NH3 (Ka = 10-33)
H2O (Ka = 1,8 x 10-16)
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Larutan CH3COOH 0,01 M ,Harga Ka = 1,8 x 10-5, nilai kosentrasi ion H+ larutan tersebut adalah……
8 x 10-7
4,2 x 10-4
4,2 x 10-6
2,4 x 10-4
2,4 x 10-6
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hitunglah pH larutan jika 17,1 gram Ba(OH)2 dilarutkan dalam air sehingga volume larutan menjadi 500 mL. (Ar Ba = 137; O = 16; H = 1)
13,60
16,30
8
9,70
11
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