Ujikom 1 Kelas XI

Quiz
•
Chemistry
•
11th Grade
•
Medium
Ika Yudiswastika
Used 17+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Senyawa berikut yang bersifat asam menurut Arrhenius adalah ....
BF3
NH3
KOH
NaCl
HNO3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reaksi ionisasi total asam Posfat yang tepat adalah ....
H3PO4 (aq)↔ H3+(aq) + PO4-(aq)
H3PO4 (aq)↔ 3 H+(aq) + PO4-(aq)
H3PO4 (aq)↔ H3+(aq) + PO43-(aq)
H3PO4 (aq)↔ H3+(aq) + PO43-(aq)
H3PO4 (aq)↔ 3 H+(aq) + PO43-(aq)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berdasarkan reaksi berikut:
CH3OH(aq) + C2H3O2–(aq) ⇌ HC2H3O2(aq) + CH3O–(aq)
HC2H3O2(aq) + CO32–(aq) ⇌ HCO3– + C2H3O2–(aq)
C6H5NH3+(aq) + OH– (aq) ⇌ C6H5NH2(aq) + H2O(l)
Yang bukan pasangan asam-basa konjugasi adalah ....
CH3OH dan CH3O–
HC2H3O2dan HCO3–
C6H5NH2 dan C6H5NH3+
C2H3O2– dan HC2H3O2
HCO3– dan CO32–
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui persamaan reaksi berikut :
HSO4̅ + H2O ↔ H3O+ + SO42̅−
Pernyataan yang tepat mengenai reaksi tersebut menurut konsep Bronsted-Lowry adalah ....
H3O+ bersifat asam karena melepaskan ion H+ dalam air
H2O bersifat basa karena mendonorkan pasangan elektron bebas
HSO4̅ bersifat asam karena melepaskan ion H+ dalam air
SO42̅− bersifat basa karena mendonorkan proton
H3O+ bersifat asam, karena mendonorkan proton
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Senyawa H2O dapat bersifat asam maupun basa. Menurut teori Bronsted-Lowry pada reaksi manakah H2O bertindak sebagai basa ....
H2O + H2SO4 ↔ H3O+ + HSO4-
H2O + CO32- ↔ HCO3- + OH-
H2O + CO2 ↔ H2CO3
H2O + NH3 ↔ NH4+ + OH-
H2O + HSO4- ↔ OH- + H2SO4
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Diketahui persamaan reaksi asam-basa Bronsted-Lowry berikut :
1) HCO3− + H2O → H2CO3 + OH−
2) HPO42− + H3O+ → H2PO4− + H2O
Berdasarkan teori asam-basa Bronsted-Lowry, sifat spesi H2O dalam kedua reaksi tersebut adalah ....
Reaksi 1) bersifat asam, karena mendonorkan proton
Reaksi 2) bersifat basa, karena menerima proton
Reaksi 1) bersifat basa, karena mendonorkan proton
Reaksi 2) bersifat asam, karena menerima proton
Reaksi 1) bersifat asam, karena mendonorkan proton
Reaksi 2) bersifat asam, karena mendonorkan proton
Reaksi 1) bersifat basa, karena menerima proton
Reaksi 2) bersifat basa, karena menerima proton
Reaksi 1) bersifat asam, karena menerima proton
Reaksi 2) bersifat basa, karena mendonorkan proton
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Di antara molekul berikut yang dapat berperan sebagai asam Lewis adalah ....
AlF3
NH3
H2O
Cl−
OH−
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