新鲜水果、蔬菜、乳制品中富含的维生素C 具有明显的抗衰老作用,

新鲜水果、蔬菜、乳制品中富含的维生素C 具有明显的抗衰老作用,但易被空气氧化。某课外小组利用碘滴定法测某橙汁中维生素C的含量,其化学方程式如下

  

下列说法正确的是

 A.上述反应为取代反应                   B.维生素C在酸性条件下水解得到2种产物

C.维生素C不可溶于水,可溶于有机溶剂   D.维生素C的分子式为C6H8O6

答案

D

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