有机物物分子式的求法是高考的重点与难点,也是热点,这部分内容主要以化学计算为中心,在高考中常以选择、填空、推断和计算题的形式出现。以下介绍几种求算有机物分子式的一般方法。一、商余法已知相对分子质量、耗氧量、电子数,均可以根据CH2的式量、 The calculation of organic matter formula is the focus and difficulty of college entrance examination, but also hot, this part of the main chemical calculation as the center, often in the college entrance examination to choose, fill in the blank, extrapolation and calculation of the form of the question. Here are some general methods for calculating the molecular formula of organic compounds. First, Shang Yu law known relative molecular mass, oxygen consumption, the number of electrons, can be based on the amount of CH2,