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问题 问答题

如图表示某些物质间转化关系．A、D为固体且组成元素相同，A为紫黑色；X、F为液体且组成元素相同，X具有消毒杀菌作用；E为产生温室效应的常见气体，Y是一种红色的金属．请回答下列问题：

（1）D的化学式______，F的化学式______；

（2）写出有关反应的化学方程式：②______；⑤______．

（3）反应⑥在催化反应室中进行，且发生多个反应，请推断完成反应（4）的化学方程式：

（1）CH4+2H2O

   高温   
.
催化剂
 CO2+4H2     （2）CH4
 高温 
.
 
C+2H2

（3）C+CO2

 高温 
.
 
2CO              （4）CH4+______
   高温   
.
催化剂
______+3H2

（4）利用合成气在一定条件下可合成化工产品乙醇（C2H6O），请写出该化学反应方程式______； 结合反应②⑥，可看出CH4不仅可作燃料，而且是重要的______原料．

答案

（1）A、D为固体且组成元素相同，A为紫黑色，因此A是高锰酸钾，X、F为液体且组成元素相同，X具有消毒杀菌作用，因此X是过氧化氢，F是水，过氧化氢在二氧化锰做催化剂的条件下生成水和氧气；故答案为：K2MnO4； H2O

（2）②是甲烷和氧气在点燃的条件下生成二氧化碳和水，⑤是碱式碳酸铜在加热的条件下生成氧化铜和二氧化碳和水，配平即可，故答案为：②CH4+2O2

 点燃 
.
 
CO2+2H2O；⑤Cu2（OH）2CO3
  △  
.
 
 2CuO+CO2↑+H2O

（3）根据质量守恒定律可知，甲烷和水在高温和有催化剂的条件下生成一氧化碳和氢气，配平即可，故答案为：H2O；CO

（4）利用合成气在一定条件下可合成化工产品乙醇（C2H6O），即一氧化碳和氢气反应生成乙醇和水，由此可看出CH4不仅可作燃料，而且是重要的化工原料，故答案为：2CO+4H2

 一定条件 
.
 
 C2H6O+H2O；化工（或工业）

填空题

有下列6种物质：Na2SO4、Na2SO3、K2SO4、I2、H2SO4、KIO3组成一个氧化还原反应，请回答下列问题：

（1）将这6种物质分别填入下面对应的横线上，组成一个未配平的化学方程式：

 +Na2SO3+ → + + +H2O

（2）反应物中发生氧化反应的物质是 （填化学式），被还原的元素是 ．

（3）反应中1mol氧化剂 （填“得到”或“失去”） mol电子．
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单项选择题

When an invention is made, the inventor has three possible (1) of action open to him: he can give the invention to the world by publishing it, keep the idea (2) , or patent it.

A (3) patent is the result of a bargain (4) between an inventor and the state, hut the inventor gets a limited period of monopoly and publishes full details of his invention to the public after that period (5) .

Only in the most exceptional circumstances (6) the lifespan of a patent (7) to alter this normal process of events.

The longest extension ever (8) was to Georges Valensi; his 1939 patent for color TV receiver circuit was extended until 1971 because for most of the patent’s normal life there was no color TV to (9) and thus no hope for reward for the invention.

Because a patent remains permanently (10) after it has terminated, the shelves of the library attached to the (11) office contain details of literally millions of ideas that are free for anyone to use and, if (12) than half a century, sometimes even repatent. Indeed, patent experts often advise anyone (13) to avoid the high cost of conducting a search through (14) patents that the one sure way of violation of any other inventor’s right is to plagiarize a dead patent. Likewise, because publication of an idea in any other form (15) invalidates further patents on that idea, it is traditionally (16) to take ideas from other areas of print. Much modern technological advance is (17) on these presumptions of legal security.

Anyone closely (8) in patents and inventions soon learns that most "new" ideas are, in fact, as old as the hills. It is theft reduction to commercial practice, either through necessity or dedication, or through the availability of new technology, (19) makes news and money. The basic patent for the theory for magnetic recording dates back to 1886. Many of the original ideas behind television originate (20) the late 19th and early 20th century. Even the Volkswagen rear engine ear was anticipated by a 1904 patent for a cart with the horse at the rear.

9（）

A.receiving

B.sending

C.receive

D.send
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