
ôn giữa kì hóa 11. TN
Quiz
•
Science
•
12th Grade
•
Practice Problem
•
Hard
Nguyễn Huyền
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46 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phản ứng nào sau đây là phản ứng thuận nghịch?
S + 3F2 → SF6
S + 2H2SO4 → 3SO2 + 2H2O
SO2 + H2S → 3S + H2O
CO (g) + H2O (g) ⇌ CO2 (g) + H2 (g)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phản ứng nào sau đây là phản ứng thuận nghịch?
Mg + 2HCl → MgCl2 + H2
SO2 + O2 ⇌ SO3
C2H5OH + 2O2 → 2CO2 + 3H2O
2KClO3 → 2KCl + 3O2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3. Cho cân bằng hóa học: N2(g) + 3H2(g) ⇌ 2NH3(g); ΔH298 < 0. Cân bằng trên chuyển dịch theo chiều thuận khi
tăng nhiệt độ của hệ phản ứng.
giảm áp suất của hệ phản ứng.
tăng áp suất của hệ phản ứng.
thêm chất xúc tác vào hệ phản ứng.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dãy chất nào sau đây trong nước đều là chất điện li yếu?
H2S, H2SO3, H2SO4.
H2CO3, H3PO4, CH3COOH, Ba(OH)2.
H2S, CH3COOH, HClO.
H2CO3, H2SO3, HClO, Al2(SO4)3.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dung dịch nào dẫn điện được
NaCl
C2H5OH
HCHO
C6H12O6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình điện li nào sau đây biểu diễn không đúng?
HF --> H+ + F-
CH3COOH ⇌ CH3COO- + H+
NaCl → Na+ + Cl-
NaOH → Na+ + OH-
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phương trình điện li nào sau đây không chính xác?
KCl ⇌ K+ + Cl-
HCOOH ⇌ HCOO- + H+
HClO ⇌ H+ + ClO-
Ca(OH)2 → Ca2+ + 2OH-
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