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本实验以探究酒精溶液可燃与不可燃的临界浓度为目的,利用二分法,多次改变实验酒精溶液浓度,分析现象和实验结果,最终较精确地得出酒精溶液燃烧的临界质量分数为36.25%.质量分数低于36.25%的酒精溶液虽然不可燃,但其中仍然含有一定量的酒精,若将其弃去无疑是一种能源浪费,如果采取适当的措施使其质量分数比临界质量分数高就能使乙醇溶液重新燃烧.这个结论可以帮助我们更好地利用能源,节约资源,对于解决当前社会能源紧缺问题具有一定的实际意义.
In order to explore the critical concentration of flammable and non-flammable alcoholic solution, this experiment used the dichotomy to change the concentration of the experimental alcoholic solution several times and analyze the phenomenon and the experimental results. The critical mass fraction of the alcoholic solution combustion was 36.25% Alcoholic solutions with a mass fraction of less than 36.25% are non-flammable, but still contain a certain amount of alcohol, which is undoubtedly a waste of energy. If proper measures are taken to make the mass fraction higher than the critical mass Ethanol solution can be re-burned.This conclusion can help us make better use of energy, save resources, to solve the current social energy shortage has some practical significance.