H-C-OH H-(-Q、Og-H +H3bO3 十H++3H2O 2 OH H O0-C-H R R 双烷基硼阳离子 H2SO4 H3BO3+3CH3OH==B(OCH3 )3+3H2O 绿色火焰 然烧绿色火焰 鉴别硼酸及盐H2SO4 H3BO3+3CH3OH== B(OCH3 )3+3H2O •燃烧绿色火焰 •鉴别硼酸及盐 2