问题 计算题

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?

答案

.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

根据甲醇的质量利用化学方程式列比例式进行解答

单项选择题
单项选择题