现有三组混合液:①乙酸乙酯和乙酸钠溶液;②乙醇和水;③溴化钠

现有三组混合液:①乙酸乙酯和乙酸钠溶液;②乙醇和水;③溴化钠和单质溴的水溶液,分离以上各混合液的正确方法依次是                           (    )

A.分液、萃取、蒸馏        B.萃取、蒸馏、分液

C.分液、蒸馏、萃取        D.蒸馏、萃取、分液

答案

C


解析:

①乙酸乙酯和乙酸钠溶液 因两者不互溶,分液即可;②乙醇和水 两者互溶但沸点有一定差异,蒸馏即可;③溴化钠和单质溴的水溶液 可利用萃取分离出单质溴。

相关题目

Reportedly yesterday a group of American soldiers were walking along the road in
Reportedly yesterday a group of American soldiers were walking along the road in Iraq when a bomb was _____, three of whom were killed.          A. set about              B. set o
 Speaking of the songs he has written, I think this is probably his _____ one.
 Speaking of the songs he has written, I think this is probably his _____ one.   A. better-known B. well-known              C. best-known        D. most-known
电子表所用纽扣电池的两极材料为锌和氧化银,电解质溶液
电子表所用纽扣电池的两极材料为锌和氧化银,电解质溶液为KOH溶液。其电极反应是: Zn+2OH-—→ZnO+H2O+2e- Ag2O+H2O+2e-—→2Ag+2OH- 总反应式
古希腊城邦被称作“男性公民的俱乐部”,这意味着古希腊
古希腊城邦被称作“男性公民的俱乐部”,这意味着古希腊城邦的主人是 A.全体奴隶主           B.除奴隶之外的全体成年男性 C.除妇女、奴隶和外
(07揭阳市一模)右图表示20℃时玉米光合作用强度与光照强
(07揭阳市一模)右图表示20℃时玉米光合作用强度与光照强度的关系,对于曲线的下列说法中,正确的是A.b点位置会随环境温度的升高而移动B.a点叶
        that she didn’t do a good job, I don’t think I am abler than
        that she didn’t do a good job, I don’t think I am abler than her. A. To have said          B. Having said          C. To say                 D. Sayi
我国各地自然地理环境差异明显,形成了特点各异的三大自
我国各地自然地理环境差异明显,形成了特点各异的三大自然区(如下图)。据此,回答 题。 7.关于我国自然地理要素的分布规律的叙述,正确的是
On the Eve of the Spring Festival, we Chinese people like to play with fireworks
On the Eve of the Spring Festival, we Chinese people like to play with fireworks, and the noise doesn't ____ until after midnight.        A.die away   B.die off    C.die out    

最新题目