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一、烃类的通式与含碳量烷烃CnH2n+2,n(n≥1)值越大,碳的质量分数越大;烯烃(或环烷烃)CnH2-2,n(n≥2)值越大,碳的质量分数不变;炔烃(或二烯烃)CnH2n-2,n(n≥2)值越大,碳的质量分数越小,苯的同系物CnH2n-6,n(n≥6)值越大,碳的质量分数越小。二、烃与H2加成每有一个双键与一个双原子分子加成,每有一个三键与两个双原子分子加成,每有一个苯环与三个双原子分子加成。如,烃类
First, the hydrocarbon general formula and the carbon content of the alkane CnH2n +2, n (n ≥ 1) The greater the value, the greater the mass fraction of carbon; olefins (or naphthene) CnH2-2, n (n ≥ 2) value The larger the mass fraction of carbon, CnH2n-2, n (n≥2) is, the smaller the mass fraction of carbon is. The homologues of benzene CnH2n-6, n 6) The larger the value, the smaller the mass fraction of carbon. Second, the hydrocarbon and H2 addition Each with a double bond and a diatomic molecule addition, each with a triple bond and two diatomic molecule addition, each with a benzene ring and three diatomic molecule addition. For example, hydrocarbons