化合物SOCl2是一种液态化合物,沸点为77℃。在盛10ml水的锥形瓶中小心滴加

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问题:

化合物SOCl2是一种液态化合物,沸点为77℃。在盛10ml水的锥形瓶中小心滴加8-10滴SOCl2可观察到剧烈反应,液面上形成白雾,并有刺激性气味的气体放出,该气体可使湿润的品红试纸褪色。在反应后的溶液中滴加AgNO3溶液,可生成一种不溶于稀HNO3的白色沉淀。

(1)试据上述实验事实,写出SOCl2与水反应的化学方程式                         

(2)将ZnCl2溶液蒸发至干,得不到无水ZnCl2,工业上常用ZnCl2•2H2O与SOCl2共热制取ZnCl2。试结合离子方程式解释原因:                        

(3)科学家经常利用水解原理制备纳米材料,请写出用TiCl4制备TiO2·xH2O的化学方程式:                        

考点:盐水解的影响因素水解方程式盐类水解判断溶液酸碱性或比较溶液pH值的大小盐类水解的定义
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利用流空现象使血管显影不属于MRA技术范畴()

A.质子弛豫增强效应

B.弥散成像

C.灌注成像

D.黑血技术

E.流空现象

题型:填空题

选择填空。

She likes ______, so she wants to be a ______. [ ]

A.cooking, cook

B.cook, cooking

C.cook, cook

题型:填空题

表面麻醉常用药物()

A.可卡因

B.普鲁卡因

C.利多卡因

D.丁卡因

E.布比卡因

题型:填空题

治疗风湿痹痛、肢体麻木、手足不遂,首选的药物是()

A.羚羊角

B.天南星

C.天麻

D.地龙

E.白芥子

题型:填空题

While much of the United States of America put Prohibition to rest 73 years ago, large parts of the South have remained strictly off-limits to alcohol sales.
But local and national business interests that stand to profit from the sale of alcohol, including real estate developers, grocery chains, restaurant groups and Wal-Mart, are combining their political and financial muscle to try to persuade hundreds of dry towns and counties to go wet. In the process, they are changing the face of the once staunchly prohibitionist Bible Belt.
Attempts by Wal-Mart and others to allow alcohol sales in other places that remain dry—415 counties in the South and in Kansas still prohibit such sales—are meeting fierce resistance from some church groups and religious leaders. They argue that returning to the days when liquor flowed will mean more family violence, underage drinking, drunken driving and a general moral decay in the community.
Wal-Mart, based in a dry county in Arkansas, forbids drinking at events held at corporate headquarters. But the giant retailer has made a push in the last year to sell more liquor, along with beer and wine, in its stores.

The word "They" underlined in Paragraph 3 refers to ______ .

A.415 counties in the South

B.alcohol saies in other places

C.attempts by Wal-Mart and others

D.church groups and religious leaders

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