TRY OUT PTS 2 11 SMA GENZA - KIMIA
Quiz
•
Chemistry
•
11th Grade
•
Hard
Rlangga Ibnu Sina
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15 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
HCN
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada reaksi asam basa berikut:
(1) HCO3-+ H2O → H2CO3 + OH-
(2) HS- + H2O → H3O+ + S2-
(3) HPO42- + H3O+ → H2PO4- + H2O
H2O bertindak sebagai basa menurut teori asam basa Bronsted-Lowry terdapat pada reaksi ….
1, 2, dan 3
1, 2
1, 3
2, 3
hanya no 1
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
1
2
3
4
5
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Kurva tersebut menggambarkan perubahan pH pada titrasi...
asam lemah ditetesi basa kuat
asam kuat ditetesi basa kuat
asam lemah ditetesi basa lemah
asam kuat ditetesi basa lemah
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Ketika asam kuat dititrasi oleh basa lemah, berapakah pH titik ekuivalennya? Mengapa?
7, karena terhidrolisis sempurna
> 7 , karena basa
< 7 karena terjadi reaksi hidrolisis menghasilkan ion H+ yang berlebih
< 7 karena terjadi reaksi hidrolisis menghasilkan ion OH- yang berlebih
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Besarnya pH larutan 0,74 gram Ca(OH)2 (Ar Ca = 40, O = 16, dan H = 1) dalam
500 mL larutan adalah … .
2 – log 4
2 + log 4
11 + log 4
12 – log 4
12 + log 4
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Larutan CH3COOH 0,1 M ( Ka = 10-5) memiliki pH sebesar...
1
2
3
5
6
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