Предмет: Химия, автор: olya464646

Нужно срочно решить задачу: Выведите молекулярную формулу углевода-альдогексозы,в котором массовая доля углерода составляет 40%, водорода- 6,7%,кислорода- 53,3%. Составьте формулы трех изомеров отвечающих условию задачи.

Ответы

Автор ответа: drama46

Если в условии дана альдогексоза, то число атомов углерода равно 6. Общая формула С6(Н2О)6 - глюкоза (фруктоза имеет кетонную группу, это кетогексоза). В ней массовая доля углерода составляет 12*6/180 = 40% (как и по условию), кислорода 16*6/180 = 53,3% (также совпадает с данными условия.

Изомеры глюкозы найдете в любом учебнике (альфа- и бета - формы циклической молекулы, D - форма линейной)

Честно, не совсем понятно, в чем суть задачи.

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