ÔN TẬP
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Easy
nguyen hoai
Used 2+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Phản ứng thuận nghịch không thể đạt hiệu suất nào sau đây?
20%.
B. 100%.
30%.
25%.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mối quan hệ giữa tốc độ phản ứng thuận vt và tốc độ phản ứng nghịch vn ở trạng thái cân bằng được biểu diễn như thế nào?
vt= 2vn
vt=vn ≠ 0
vt=0,5vn
vt=vn=0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây không phân li ra ion khi hòa tan trong nước?
CH3COOH.
C2H5OH (ethanol)
KCl.
NaOH.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chất nào sau đây là chất điện li?
CO2.
NH3.
Na2SO4.
CaO.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy nào dưới dây chỉ gồm chất điện li mạnh?
HBr, Na2S, Mg(OH)2, Na2CO3.
HNO3, H2SO4, KOH, K2SiO3.
Ca(OH)2, KOH, CH3COOH, NaCl
H2SO4, NaOH, NaCl, HF.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy chất nào sau đây, trong nước đều là chất điện li yếu?
H2S, H2SO3, H2SO4.
H2CO3, H2SO3, HClO, Al2(SO4)3.
H2S, CH3COOH, HClO.
H2CO3, H3PO4, CH3COOH, Ba(OH)2.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bóng cười thực chất là quả bóng bay được bơm khí N2O. Chất khí này vốn được sử dụng cho y tế với tác dụng gây mê, an thần, giảm đau,… Tên gọi của N2O là
nitrogen oxide.
dinitrogen oxide.
nitrogen dioxide.
dinitrogen tetroxide
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