
hợp chất dị vòng
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Professional Development
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
dung môi nào là hợp chất dị vòng ?
diglyme
DMF
THF
DMSO
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính thơm của các hợp chất dị vòng được sắp xếp như sau
pyridin >thiophen >pyrrol >furan
pyrrol >pyridin >furan >thiophen
thiophen >pyrrol >furan >pyridin
thiophen >pyridin >pyrrol >furan
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
khả năng thế ái điện tử của các dị vòng được sắp xếp như sau
furan >thiophen >pyrrol
pyrrol > furan > thiophen
furan > pyrrol > thiophen
thiophen > pyrrol > furan
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
phát biểu nào ĐÚNG ?
pyrrol là một base yếu
pyrrol có tính base mạnh hơn triethylamin
pyrrol dễ bị proton hóa tại N
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
hợp chất nào có tính base mạnh nhất ?
pyridin
imidazol
pyrolidin
pyrrol
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
hợp chất nào có tính base yếu nhất ?
pyridin
imidazol
pyrolidin
pyrrol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
phản ứng thế ái điện tử của pyridin thường được ưu tiên ở vị trí nào ?
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