题目

Christmas is a season to spread joy. Can we spread this joy by caring a little more about nature and going green? Here are some good ideas. Reduce the use of the decorative(装饰) lights. Make use of the eco-friendly(环保的)lights on the market. In this way you can save electricity. Reuse the wrapping (包装)paper to wrap the gifts. You don’t need to buy new wrapping paper every year. Also try using the same small decorations for your Christmas tree. Recycle(循环利用)all those decorations that your can not use any more. You can send out Christmas cards made from recycled paper. (14分)只含碳、氢、氧的有机物,为便于研究其燃烧时,生成物与所需氧气的量的关系,可用通式(CxHy)m(H2O)n或(CxOy)m(H2O)n表示它们。(m、n、x、y 均为正整数)例如:CH3OH、C2H5OH、C3H7OH等物质可用通式(CH2)m(H2O)n表示,其m分别为1,2,3,n均为1。它们燃烧时所需的氧气和生成的二氧化碳的体积比均为3∶2。(1)现有一类只含C、H、O的有机物。它们燃烧时所需消耗的氧气和生成的二氧化碳的体积比为5∶4(相同状况),按照上述要求,该类化合物的通式可表示为                  (2)写出这类化合物分子量最小的物质的结构简式                       。(3)写出这类化合物中生成CO2与H2O的物质的量之比为1∶1,且能发生水解反应的物质的分子式                 ,该物质能发生水解的同分异构体有       种。(4)若某一类有机物可用通式(CxOy)m(H2O)n表示,则在相同的条件下,该类化合物完全燃烧时消耗的氧气体积为V1和生成的CO2体积为V2,则V1、V2必须满足的条件是                                           。(5)现有一种有机物,它完全燃烧时,消耗氧气与生成CO2的体积比为3∶4,它具有两个羧基,其余的碳原子与相同的原子或原子团结合,取0.2625g该化合物恰好能与2500ml0.10 00mol·L-1的NaOH完全中和,由此可知该化合物的分子式应是              结构简式为                                              。
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