Remidial Kimia Kelas XII-SC1

Quiz
•
Chemistry
•
12th Grade
•
Medium
Lita Agustina
Used 2+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Molekul atau ion di bawah ini yang dapat bertindak sebagai asam atau basa (amfiprotik) menurut Bronsted-Lowry adalah ....
HC2O4-
HCl
H2O
NH2-
HBr
2.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
NH3 (aq) + H2O (l) ↔ NH4+ (aq) + OH- (aq)
Yang merupakan pasangan asam-basa konjugasi adalah ....
NH3 dan H2O
NH4- dan OH-
NH3 dan OH-
H2O dan NH4-
H2O dan OH-
3.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Larutan Ca(OH)2 0,01M sebanyak 1L memiliki pH sebesar ....
2 - log 2
2 + log 1
12 - log 2
12 + log 1
12 + log 2
4.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Tetapan disosiasi Ka suatu asam lemah adalah 10-7. Larutan 0,1M asam ini mempunyai pH ....
2
3
4
5
6
5.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Nilai tetapan hidrolisis dari 1L larutan garam NH4CH3COO 0,25M dengan nilai Ka CH3COOH = 1,75 × 10-5 mol/L dan Kb NH3 = 1,8 × 10-5 mol/L adalah .... mol/L
1,17 × 10-5
2,11 × 10-5
3,17 × 10-5
3,21 × 10-5
4,15 × 10-5
6.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Tubuh kita memiliki sistem penyangga uuntuk mempertahankan kestabilan pH cairan intrasel, ekstrasel, dan sistem lainnya dalam tubuh. berikut ini beberapa zat yang dapat membentuk larutan penyangga.
1) H2PO4-
2) H2CO3-
3) CO32-
4) HPO42-
5) PO43-
Pasangan zat kimia yang dapat membentuk larutan penyangga adalah ....
(1) dan (2)
(1) dan (4)
(1) dan (5)
(2) dan (3)
(4) dan (5)
7.
MULTIPLE CHOICE QUESTION
10 mins • 5 pts
Larutan penyangga fosfat berperan dalam menjaga .... dalam tubuh.
Cairan intrasel
Cairan ekstrasel
Kadar gula
Kadar oksigen
Kadar air
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