
AXIT CACBOXYLIC
Authored by Nguyên Trương
Science
11th Grade
Used 1+ times

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21 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Axit no, đơn chức, mạch hở có công thức chung là
CnH2n -1COOH (n≥2).
CnH2n +1COOH (n≥0).
CnH2n (COOH)2 (n≥0).
CnH2n -3COOH (n≥2).
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Axit axetic có công thức là
CH3COOH
CH3CHO
C2H5OH
CH3OH
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Axit cacboxylic là hợp chất hữu cơ có chứa nhóm chức
(-COOH).
(-NH2).
(-CHO).
(-OH).
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Axit fomic có phản ứng tráng gương vì trong phân tử có
nhóm cacbonyl.
nhóm anđehit.
nhóm cacboxyl.
nhóm hiđroxyl.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Axit benzoic được sử dụng như một chất bảo quản thực phẩm (kí hiệu là E-210) cho xúc xích, nước sốt cà chua, mù tạt, bơ thực vật, … Nó ức chế sự phát triển của nấm mốc, nấm men và một số vi khuẩn. Công thức phân tử axit benzoic là CH3COOH
CH3COOH
HCOOH
C6H5COOH
(COOH)2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giấm ăn là dung dịch axit axetic có nồng độ là
2% - 5%.
5% - 9%.
9% -12%.
12% -15%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thứ tự sắp xếp theo sự tăng dần tính axit của CH3COOH ; C2H5OH ; CO2 và C6H5OH là
C6H5OH < CO2 < CH3COOH < C2H5OH
CH3COOH < C6H5OH < CO2 < C2H5OH
C2H5OH < C6H5OH < CO2 < CH3COOH
C2H5OH < CH3COOH < C6H5OH < CO2
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