Hóa học 11
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Easy
Tuyên Mạnh
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
1,8
3,6
5,4
7,2
Answer explanation
nx=0,1, nCO2=0,2
Công thức chung : CnH2n+2
=> n=0,2/0,1 = 2
=> nH=(2n+2).nx=0,6
=> nH2O=0,3 => mH2O=5,4
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Phản ứng đặc trưng của Ankan là
Phản ứng thế
Phản ứng cộng
Phản ứng oxi hóa
Phản ứng cháy
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
10,5
11,5
12
12,5
Answer explanation
nx=24,64/22,4=1,1 mol
mtrước pư = msau pư = 25,3
=> MX = 25,3/1,1 = 23
=> tỉ khối so với H2 = 23/2= 11,5
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Ankin là những hidrocacbon không no, mạch hở có công thức chung là
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
But-2-in
Propin
Etilen
Propan
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
24,8
45,3
39,2
51,2
Answer explanation
nCO2=1, nH2O=1,5
=> nO2= nCO2 + 1/2nH2O=1,75
=> VO2= 1,75 . 22,4= 39,2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2,24 lít Anken lội qua bình đựng dung dịch brom thì thấy khối lượng bình tăng 5,6 gam. Anken có công thức phân tử là
Answer explanation
manken=mbình tăng
=> Manken=5,6/0,1 = 56
Anken có công thức : CnH2n
=> n=4 => anken C4H8
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