题目内容

甲醇(CH3OH)是无色有特殊气味的液体,可作燃料,其充分燃烧的化学方程式为2CH3OH+3O2点燃2CO2+4H2O。若64g的甲醇燃烧能生成多少克水?

.解:设甲醇燃烧能生成水的质量为X
2CH3OH+3O2点燃2CO2+4H2O
64                72
6.4g              x·······························1分
=      ·····································1分
x = 7.2g ··········································1分

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