配套习题- 混合物的分离和提纯——萃取实验 -【青果学院】

1/5单选题

难度：

1.如图在盛有溴水的三支试管中分别加入汽油、四氯化碳和酒精，振荡后静置，出现下列现象，正确的结论是

A	①加入的是CCl₄，②加汽油，③加酒精
B	①加入的是酒精，②加CCl₄，③加汽油
C	①加入的是汽油，②加酒精，③加CCl₄
D	①加入的是汽油，②加CCl₄，③加酒精

正确答案：RA==

5rG95rK56IO96JCD5Y+W5rq05rC05Lit55qE5rq077yM5L2G5a+G5bqm5bCP5LqO5rC055qE5a+G5bqm77yM5omA5Lul55yL5Yiw55qE546w6LGh5piv5rq25ray5YiG5bGC77yM5LiK5bGC5ZGI57Sr57qi6Imy77yM5LiL5bGC5ZGI5peg6Imy77ybPGJyPuWbm+awr+WMlueis+iDveiQg+WPlua6tOawtOS4reeahOa6tO+8jOS9huWvhuW6puWkp+S6juawtOeahOWvhuW6pu+8jOaJgOS7peeci+WIsOeahOeOsOixoeaYr+a6tua2suWIhuWxgu+8jOS4i+WxguWRiOe0q+e6ouiJsu+8jOS4iuWxguWRiOaXoOiJsu+8mzxicj7phZLnsr7lkozmurTmsLTog73kupLmurbvvIzmiYDku6XnnIvliLDnmoTnjrDosaHmmK/murbmtrLkuI3liIblsYLvvIzmurbmtrLku43nhLbkuLrmqZnpu4ToibLvvIw8YnI+5pWF6YCJ77yaRO+8jg==

2/5单选题

难度：

2.用CCl₄萃取碘的饱和水溶液中的碘，下列说法不正确的是

A	萃取时，要充分振荡混合液体并适当旋转活塞排气减压
B	碘在CCl₄中的溶解度比在水中的溶解度大，碘的CCl₄溶液呈紫红色
C	使用前要检查分液漏斗是否漏液
D	分液时，水从分液漏斗下口流出，碘的CCl₄溶液从漏斗上口倒出

正确答案：RA==

Qe+8juaMr+iNoea3t+WQiOa2suS9k+aYk+S9v+WIhua2sua8j+aWl+WGheWOi+W8uui/h+Wkp++8jOW6lOmAguW9k+aXi+i9rOa0u+WhnuaOkuawlOWHj+WOi++8jOaVhUHmraPnoa7vvJs8YnI+Qu+8jueimOWcqENDbDxzdWI+NDwvc3ViPuS4reeahOa6tuino+W6puavlOWcqOawtOS4reeahOa6tuino+W6puWkp++8jOWPr+eUqOWbm+awr+WMlueis+iQg+WPlu+8jOeimOeahENDbDxzdWI+NDwvc3ViPua6tua2suWRiOe0q+e6ouiJsu+8jOaVhULmraPnoa7vvJs8YnI+Q++8juS4uumYsuatoua8j+a2su+8jOS9v+eUqOWJjeimgeajgOafpeWIhua2sua8j+aWl+aYr+WQpua8j+a2su+8jOaVhUPmraPnoa7vvJs8YnI+RO+8juWIhua2suaXtu+8jOawtOS7juWIhua2sua8j+aWl+S4iuWPo+a1geWHuu+8jOeimOeahENDbDxzdWI+NDwvc3ViPua6tua2suS7jua8j+aWl+S4i+WPo+a1geWHuu+8jOaVhUTplJnor6/vvI48YnI+5pWF6YCJRO+8jg==

3/5单选题

难度：

3.在盛有碘水的分液漏斗中，加入少量CCl₄后振荡，静置片刻后，下列叙述正确的

A	整个溶液变紫色
B	上层为无色，下层为紫红色
C	为了提高效率，萃取后应该马上分液
D	分液时，先把分液漏斗上层液体从上口倒出，再把下层液体从下口放出

正确答案：Qg==

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

4/5单选题

难度：

4.用四氯化碳萃取碘水中的碘，下列说法中不正确的是

A	实验中使用的主要仪器是分液漏斗
B	碘在四氯化碳中的溶解度比在水中的溶解度大
C	碘的四氯化碳溶液呈紫色
D	分液时，水从分液漏斗下口放出，碘的四氯化碳溶液从分液漏斗上口倒出

正确答案：RA==

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

5/5单选题

难度：

5.下列萃取与分液结合进行的操作（用CCl₄为萃取剂从碘水中萃取碘）中错误的是

A	饱和碘水和CCl₄加入分液漏斗中后，塞上上口部的塞子，用左手压住分液漏斗上口部，右手握住活塞部分，把分液漏斗倒转过来振荡
B	静置，分液漏斗中溶液分层，下层呈紫红色，上层几乎无色
C	打开分液漏斗的活塞，使全部下层液体沿承接液体的烧杯内壁慢慢流出
D	最后继续打开活塞，另用容器承接并保存上层液体

正确答案：RA==

5LiK5bGC5ray5L2T5bqU5b2T5LuO5YiG5ray5ryP5paX5LiK5Y+j5YCS5Ye677yMROmhuemUmeivr+OAguaVhemAieaLqUTpobnjgII=