
考考你:第62章 分離和提純的方法
Authored by Chemistry Aristo
Chemistry
9th - 12th Grade
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪個是最適合用來分離甲醇和丙-1-醇的混合物的方法?
(沸點:甲醇 = 64.6°C、丙-1-醇 = 97.2°C)
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在下列各對混合物中,哪一或哪些所含的成分可透過使用分液漏斗來把它們分離?
(1) 環己烷和環己烯
(2) 四氯甲烷和水
(3) 含有葡萄糖和氯化鈉的溶液
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪些色層法使用硅膠作為固定相?
(1) 柱色層法
(2) 紙色層法
(3) 薄層色層法
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在一實驗中,以薄層色層法來分析化合物Q。所得的色譜如圖中所示。
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
利用柱色層法,並以丙酮作為洗提溶劑來分離由物質X、Y和Z所組成的混合物。下列哪項正確顯示這些物質沿着柱向下流動所需的時間(從最短時間到最長時間)?
A. Z、Y、X
B. Y、Z、X
C. X、Z、Y
D. X、Y、Z
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
使用柱色層法來分離一個含有不同有色成分的混合物,在某一時刻的分離過程如圖中所示。下列哪些有關這分離的陳述正確?
(1) 這混合物含有至少兩個成分。
(2) 使用礬土作為固定相。
(3) 玻璃棉能防止礬土從活栓漏出。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪個或哪些物質有明確的熔點?
(1) 阿士匹靈
(2) 聚苯乙烯
(3) 尼龍6.6
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