1g烷烃D完全燃烧时,消耗标准状况下的氧气2.464L,则D的分子式为?请详解 答案为C7H16
人气:499 ℃ 时间:2019-08-19 09:12:30
解答
标准状况下的氧气2.464L 物质的量为 2.464/22.4 = 0.11mol
CxH2x+2------(3x+1)/2O2
14x+2 (3x+1)/2
1 g 0.11mol 列比例式:上:下=上:下 x=7 C7H16 庚烷
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