10分鐘小測:第62章 分離和提純的方法

Quiz
•
Chemistry
•
9th - 12th Grade
•
Hard
Chemistry Aristo
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪物理方法最適合用來分離由苯和氯仿這兩種互溶液體所組成的混合物?
(沸點:苯 = 80.1°C、氯仿 = 61.2°C)
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪方法最適合用來分離由己烷和橄欖油這兩種不互溶液體所組成的混合物?
(沸點:己烷 = 68.7°C、橄欖油 = 180°C)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪些是從有機化合物的水溶液中提取有機化合物時,使用乙氧基乙烷作為有機溶劑的原因?
(1) 它與水不互溶。
(2) 它容易蒸發。
(3) 它溶於許多有機化合物。
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在下列哪種或哪些情況下,不適合使用蒸餾法來分離液態混合物?
(1) 該混合物是易燃的。
(2) 該混合物對温度很敏感。
(3) 所含成分的沸點差異大。
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在分液漏斗中加進下列哪液體,可把己酸從它和己-1-醇在二氯甲烷溶液中分離出來?
(1) 氫氧化鈉溶液
(2) 碳酸鈉溶液
(3) 碳酸氫鈉溶液
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