
OTGK1
Authored by tâm nguyễn
Chemistry
11th Grade
Used 6+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong các chất sau, chất nào là chất điện li yếu ?
Mg(OH)2.
HNO3.
KOH.
Fe2(SO4)3.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình điện li nào sai?
AlCl3 →Al3+ +3Cl2-
CaCl2 → Ca2++2Cl-
Al2(SO4)3 →2Al3+ + 3SO42-
Ca(OH)2 → Ca2+ + 2OH-
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho dãy các chất: NaOH, Sn(OH)2, Pb(OH)2, Al(OH)3, Cr(OH)3. Số chất trong dãy có tính chất lưỡng tính là:
1
2
4
3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Muối nào sau đây là muối axit?
(NH4)2SO4.
Na3PO4.
Ca(HCO3)2.
CH3COOK.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dd X gồm 0,3 mol K+; 0,6 mol Mg2+; 0,3 mol Na+; 0,6 mol Cl- và a mol Y2-. Cô cạn dd X, thu được m g muối khan. Ion Y2- và giá trị của m là
SO42- và 169,5.
CO32- và 126,3.
SO42- và 111,9.
CO32- và 90,3.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho dung dịch Ba(OH)2 0,005M, pH của dung dịch có giá trị là
12
11,7
3,3
10,7
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Một dung dịch có nồng độ ion OH- bằng 1.10-5M thì dung dịch này là
Axit, có pH = 5
Axit, có pH = 9
Bazơ, có pH = 5
Bazơ, có pH = 9.
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