论文部分内容阅读
在乙烯和乙炔分子中,都含有碳碳不饱和键,跟烷烃相比,具有较强的化学活性。但是就其乙烯和乙炔二者相比,谁又具有更强的化学活性呢?我们在教学中发现一些学生有C=C键比C—C键活泼,而C≡C键的不饱和度又比C=C键大,那么,C≡C键也应比C=C键更活谈的片面推论。因此,对乙烯和乙炔的化学活性作一全面的比较并加以适当的解释,无论是对于搞好我们的教学,还是帮助我们深入认识烯烃和炔烃的化学特性,都具有一定的意义。
In ethylene and acetylene molecules, contain carbon-carbon unsaturated bonds, compared with alkanes, with strong chemical activity. But who is more chemically active than both ethylene and acetylene? We found in teaching that some students have a C = C bond that is more active than a C-C bond and that the unsaturation of the C≡C bond More than C = C, then the C≡C key should also be one-sided inference more alive than the C = C key. Therefore, a comprehensive comparison of the chemical activities of ethylene and acetylene and the proper interpretation of them will be of great significance both for improving our teaching and for helping us understand the chemical characteristics of olefins and alkynes.