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Authored by Tten Cao
Chemistry
12th Grade
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trong công thức của ester RCOOR'. Phát biểu nào sau đây đúng?
R phải là gốc hydrocarbon.
R có thể là nguyên tử H hoặc gốc hydrocarbon.
R' có thể là nguyên tử H hoặc gốc hydrocarbon.
RCOOR' và R'COOR là 2 cách viết của cùng 1 ester.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
CH3COOC2H5 thuộc loại chất
amin.
carboxylic acid.
ester.
chát béo
Answer explanation
có COO ở giữa có hai nhóm hai bên đó
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 3: Hợp chất nào sau đây là ester?
CH3COOH
CH3CHO.
CH3COOCH3.
CH3COCH3.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ester không no, 1C=C, đơn chức, mạch hở có công thức phân tử là
CnH2n-2O4 (n≥3).
CnH2nO2 (n≥2).
CnH2n-4O2 (n≥3).
CnH2n-2O2 (n≥3).
Answer explanation
nhìn cho kĩ đề nha
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ester no, đơn chức, mạch hở có công thức phân tử là
CnH2nO (n≥2).
CnH2nO2 (n≥2).
CnHnO3 (n≥2).
CnH2nO4 (n≥2).
Answer explanation
chán giải thk r
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tên gọi của ester HCOOCH3 là
methyl acetate.
methyl formate.
ethyl formate.
ethyl acetate.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tên gọi của ester CH3COOC2H5 là
Ethyl formate.
Ethyl acetate.
Methyl acetate.
Methyl formate.
Answer explanation
CH3 đọc là acetate nha
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