
axit 1
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
Hà Vũ
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12 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
C4H8O2 có bao nhiêu đồng phân mạch hở tác dụng được với Na và NaOH?
5
4
3
2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Axit fomic làm quỳ tím chuyển sang màu gì?
xanh
đỏ
tím
vàng
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
chất nào sau đây là axit metacrylic?
CH2=CH-COOH
CH3-CH(OH)-COOH
CH2=C(CH3)-COOH
HOOC-CH2-COOH
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Axit nào sau đây có tính axit yếu nhất?
CH3-CH2-COOH
CH2=CH-COOH
(COOH)2
CH3COOH
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
chất có nhiệt độ sôi cao nhất là
CH3CHO
C2H5OH
CH3COOH
C2H6
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Trung hòa 3 gam một axit cacboxylic no, đơn chức mạch hở cần dùng 100ml dung dịch NaOH 0,5M. Công thức cấu tạo của axit là
C3H5COOH
CH3COOH
HCOOH
C2H5COOH
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Đun 12 gam axit CH3COOH với 13,8 gam C2H5OH (có xúc tác H2SO4 đặc) thu được m gam este CH3COOC2H5. Biết hiệu suất của phản ứng là 62,5%. Khối lượng của este là
11,4 gam
7,4 gam
11,2 gam
11 gam
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