Hoá 11 - Kiểm tra 15 phút Chương 1
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
Lan Anh
Used 138+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Chất nào sau đây là chất điện li yếu
H2O
NaCl
HCl
NaOH
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho các chất: HCl, Zn(OH)2, CaCl2, K2CO3, Ca(OH)2, H2S, HNO3. Số chất điện li mạnh là
4
5
6
7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhóm chất nào sau đây chỉ gồm các chất điện li mạnh?
NaOH, H2SO4, KNO3
HNO3, MgCO3, HF
HCl, Ba(OH)2, CH3COOH
NaCl, H2S, (NH4)2SO4
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Công thức hóa học của chất mà khi tan trong nước phân li ra ion Fe3+ và NO3- là
Fe(NO3)2
Fe(NO3)3
Fe(NO2)2
Fe(NO2)3
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Theo thuyết Areniut, chất nào sau đây là axit?
NH3
KOH
C2H5OH
CH3COOH
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Công thức tính pH là
pH = log [H+]
pH = - log [H+]
pH = 10 log [H+]
pH = - log [OH-]
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Phát biểu nào sau đây không đúng?
Môi trường kiềm có pH < 7.
Môi trường kiềm có pH > 7.
Môi trường trung tính có pH = 7.
Môi trường axit có pH < 7.
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