

VIDEO PHẢN ỨNG ESTER HÓA
Interactive Video
•
Chemistry
•
11th Grade
•
Hard
Nguyễn Hằng
FREE Resource
3 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 1. Trước khi đun phải hơ đều ống nghiệm để:
A. phản ứng xảy ra nhanh hơn.
B. Hạn chế việc thoát hơi nước.
C. Tránh làm vở ống nghiệm.
D. Tăng áp suất cho phản ứng.
2.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
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3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2. Cho NaCl bão hòa vào hỗn hợp sau phản ứng có tác dụng gì?
A. Trung hòa acid dư.
B. Làm các chất trong hỗn hợp tách lớp.
C. Tạo môi trường kiềm.
D. Làm chất xúc tác.
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