问题 判断题

苏丹红一号(sudan Ⅰ)是一种偶氮染料,不能作为食品添加剂使用。它是由苯胺和2萘酚为主要原料制备的,它们的结构简式如下所示:

(1)苏丹红一号的化学式(分子式)为____________________。

(2)在下面化合物(A)—(D)中,与2萘酚互为同分异构体的有(填字母代号)________________。(提示:可表示为

(3)上述化合物(C)含有的官能团是___________________________。

(4)在适当的条件下,2萘酚经反应可得到芳香化合物E(C8H6O4),1 mol E与适量的碳酸氢钠溶液反应可放出二氧化碳44.8 L(标准状况),E与溴在有催化剂存在时反应只能生成两种一溴取代物,两种一溴取代物的结构简式分别是___________________________,E与碳酸氢钠反应的化学方程式是_________________________________________。

(5)若将E与足量乙醇在浓硫酸作用下加热,可以生成一个化学式(分子式)为C12H14O4的新化合物,该反应的化学方程式是_________________________________________,反应类型是_______________________。

答案

(1)C16H12N2O (2)(A)(B)(C) (3)碳碳双键 醛基

根据苏丹红一号的结构简式和同分异构体的定义等,可以解决第(1)(2)(3)题。1 mol E能和NaHCO3溶液反应,放出44.8 L CO2,可知E中存在—COOH而不是—OH,因为酚—OH的酸性比H2CO3弱。由反应关系:1 mol RCOOH—22.4 L CO2,每个E分子中含有两个—COOH,再结合分子式C8H6O4,可以确定E的结构简式为E与浓H2SO4、乙醇共热时发生酯化反应,每1 mol E消耗2 mol乙醇。

阅读理解

Reading comprehension.

     According to legend, the Bridge of Sighs in Venice, Italy, which connects the Palazzo Ducale to an

ancient prison, got its name because the walk across it gave prisoners on their way to jail a final chance

to appreciate the beauty of the city.

     The view from the bridge today, however, is more likely to be of a giant billboard selling Bulgari or

Coca-cola. Beyond the billboards, monuments are being restored. The money comes from advertising

profits.

     But when the Coke billboards went up this summer on buildings near the Piazza San Marco, which is

at the historic heart of Venice, there was a public debate.

     "We can't commercialize everything," said Alessandra Mottola Molfino, a Venetian. "The lesson that

goes out is that a price is for everything."

     "We couldn't stay quiet," said Maria Camilla Bianchini d'Alberigo, president of a heritage protection

association. "Too much is too much."

     There needed to be rules, she added, rules that prevent the advertising billboards clashing (冲突) with

the monuments of the city.

     City of officials, however, argue that without these ads, the city could not afford to maintain its heritage.

Many have been damaged by centuries of wear and are even a threat to public safety.

     "I can't turn down the image of bottle when there are pieces of the Palazzo Ducale falling to the ground,"

said Renata Codello, a Culture Ministry official.

     The Culture Minister has a budget of about $ 47 million (315 million yuan) for restoration of monuments,

but Italy has a rich architectural heritage, and funds are always tight.Of that amount, $ 1.8 million was given

to the entire Vector region, which includes Venice. 

     Two years ago, the city signed an agreement with the Dotter Group, a company responsible for the

restoration of the Bridge of Sighs and the Palazzo Ducale.It allows it to sell ad space. 

     But there is a condition in the agreement: The ads should not offend public taste.

     In August, Venice banned US actress Julianne Moore's Bulgrari ad from a billboard in the Piazza San

Marco.

     The photo shows a naked Moore covered with lion cubs, handbags and jewelry, Mayor Giorgio Orsoni

called the image too racy (猥亵) and unsuitable for the Piazza San Marco. 

     "I take account of the fact that Venice is part of the real world…but we cannot accept these Hollywood-

style images. There arc intelligent sponsors, and we need to come up with advertising that suits Venice, not

Times Square," he said in a speech.  

1. The article is mainly about _____ in Venice. [ ]

A. restoration of cultural heritage

B. widespread commercialization

C. the conflict between ads and cultural heritage

D. the difficulty of restoring monuments

2. In the first paragraph, the beautiful view from the Bridge of Sighs is mentioned to _____. [ ]

A. introduce other monuments of the ancient city

B. show how much many ancient structures need restoring

C. indicate that the view is blocked by huge ads

D. create interest in the famous city

3. From the article we can conclude that Rcnata Codello _____ the advertising.[ ]

A. is in favor of

B. is worried about

C. objects to

D. doesn't mind

4. Why do many Venetians complain about the ads? [ ]

A. They are intolerant of commercialization.

B. They feel the ads are damaging the city.

C. The ads are usually racy and in an American style.

D. The ads don't present a traditional view of Venice.

5. It can be inferred from the passage that _____.[ ]

A. Hollywood stars' ads cannot go up in Venice

B. the mayor of Venice is expecting new advertising

C. the Dotter Group may stop its restoration work for lack of funds

D. people can buy Bulgaria or Coca-cola on the Bridge of Sighs

问答题 简答题