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高中化学(必·修)第二册131面5题:某种酯的蒸气密度是空气的3.O4倍,这种酯22g燃烧后得到1.8g水及2.24L二氧化碳(标准状况),求它的分子式。第一种解法:设这种酯的分子式为C。H。。O。,则其燃烧的方程式为:或(3.04/29):2.2一18::1.8解得:n—4。则酯的分子
High School Chemistry (Bi Xiu) Volume II 131 Problem 5: The vapor density of certain esters is 3. O4 times, 22 g of this ester gives 1.8 g of water and 2.24 L of carbon dioxide (standard condition) after combustion, and finds its molecular formula. The first solution: Let this ester have the formula C. H. . O. , then its combustion equation is: or (3.04/29): 2.2 to 18::1.8 Solution: n-4. The ester molecule