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解答讨论型计算题的关键,一是要明确讨论的对象和内容;二是要充分挖掘题中可能隐含着的种种条件,并能合理地利用讨论的条件进行讨论。本文从实例来说明讨论型计算题的讨论方法及策略。一、条件不足需进行讨论例1 某气态烃的混合物20 mL与过量O_2完全燃烧生成30 mL水蒸气和40mL二氧化碳,求解这是什么烃?各占多少体积?(条件为1.0×10~5Pa和100℃以上)
The key to solving the discussion-type calculation questions is to clearly define the object and content of the discussion. Second, it is necessary to fully explore the conditions that may be implied in the questions and to make reasonable use of the conditions for discussion. This article illustrates the discussion methods and strategies for discussing computational problems from examples. I. Insufficient conditions to be discussed Example 1 Complete combustion of 20 mL of a mixture of gaseous hydrocarbons and excess O 2 to produce 30 mL of water vapor and 40 mL of carbon dioxide. Solve for what is this hydrocarbon? How many volumes each account? (conditions are 1.0×10~5Pa and Above 100°C)