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有机合成与推断题是综合应用各类有机物的不同性质,利用信息推测未知物的结构、合成指定结构产物的一类试题。此类问题集再认、推演、重组、开发、新信息给予、探究六位一体的题型,突破口选择是攻克有机合成推断题的秘钥。1.计算秘钥例1有机物A蒸气密度,是相同状态下甲烷密度的6.25倍,有机物中各元素的质量分数分别为碳60%,氢8%,氧32%,A的分子式是。解析相对密度法计算相对分子质量M=16
Organic synthesis and inference questions is a comprehensive application of various types of organic matter of different nature, the use of information to infer the structure of unknown substances, the synthesis of the designated structure of a class of questions. Such problems set recognition, deduction, reorganization, development, new information to explore the six in one of the questions, the choice of breakthrough is to overcome the key to organic synthesis inference questions. 1. Calculate the key Case 1 organic vapor density A, is the same state 6.25 times the density of methane, organic matter in the mass fraction of carbon were 60%, 8% hydrogen, 32% oxygen, A formula is. Analyze the relative density method to calculate the relative molecular mass M = 16