Đốt nóng sợi dây đồng được cuộn thành hình lò xo trên ngọn lửa đèn cồn rồi nhúng nhanh vào lọ đựng etanol, sản phẩm chính tạo thành là

Hóa (DM_Nghĩa)

Quiz
•
Chemistry
•
9th - 12th Grade
•
Medium
Minh Dương
Used 2+ times
FREE Resource
19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
C2H5OC2H5
CH3CHO
CH3COCH3
C2H4
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Axit no, đơn chức, mạch hở có công thức chung là
CnH2n -1COOH (n≥2).
CnH2n (COOH)2 (n≥0).
CnH2n +1COOH (n≥0).
CnH2n -3COOH (n≥2).
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Axit axetic có công thức là
C2H5OH
CH3OH
CH3COOH
CH3CHO
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Axit cacboxylic là hợp chất hữu cơ có chứa nhóm chức
(-COOH).
(-NH2).
(-CHO).
(-OH).
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Axit fomic có phản ứng tráng gương vì trong phân tử có
nhóm cacbonyl.
nhóm cacboxyl.
nhóm anđehit.
nhóm hiđroxyl.
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Axit axetic tác dụng được với các chất trong dãy
Mg, dung dịch KHCO3, rượu metylic.
Mg, Ca(OH)2, CaCl2.
Mg, Cu, rượu etylic.
NaOH, dung dịch Na2CO3, anđehit axetic.
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Để phân biệt HCOOH và CH3COOH ta dùng
Na
AgNO3/NH3.
CaCO3
NaOH
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