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将5g充分纯化和干燥的苯乙烯在50mL四氢呋喃中的溶液保持在-50°C。另将 1.0g钠和6.0g萘加入干燥的50mL四氢呋喃中搅拌混匀,形成暗绿色萘钠溶液。将1.0mL.茶钠绿色溶液注入苯乙烯溶液中,立刻变成橘红色,数分钟后反应完全。加入数毫升甲醇急冷,颜色消失。将反应混合物加热至室温,聚合物析出,用甲醇洗涤,无其他副反应,试求聚苯乙烯的n。如所有大分子同时开始增长和终止,则产物w应该为多少?

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参考答案:
举一反三

【单选题】Desperately short of living space and dangerously prone to flooding, the Netherlands plans to start building homes, businesses and even roads on water. With nearly a third of the country already cover...

A.
most parts of the country are covered by water
B.
the country is constantly threatened by floods
C.
it will promote the cultivation of flowers
D.
people think it better to live on water
相关题目:
【单选题】Desperately short of living space and dangerously prone to flooding, the Netherlands plans to start building homes, businesses and even roads on water. With nearly a third of the country already cover...
A.
most parts of the country are covered by water
B.
the country is constantly threatened by floods
C.
it will promote the cultivation of flowers
D.
people think it better to live on water
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