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探索性试题是指在所求解的问题中存在多个不确定条件,需要通过探求的方法才能获得明确结果的试题。解答探索性试题的一般思路是:找源联想→有据猜想→代人验证。现举例分析如下:例1(’97全国高考34题)A、B都是芳香族化合物,lmolA水解得到lmolB和lmol醋酸。A、B的分子量都不超过200,完全燃烧都只生成CO_2和H_1O,且B分子中碳和氢元素总的质量百分含量为65.2%(即质量分数为0.652)。A溶液具有酸性,不能使FeCl_3溶液显色。
The exploratory test questions refer to the existence of multiple uncertain conditions in the problem being solved. It is necessary to obtain the test result with clear results by searching for the problem. The general idea of answering exploratory test questions is: to find the source association → well-founded guess → verification of the generation. Examples are as follows: Example 1 (’97 national entrance examination 34 questions) A and B are aromatic compounds, and 1 mol A of hydrolysis yields 1 mol B and 1 mol of acetic acid. The molecular weights of A and B are not more than 200, and only CO 2 and H 1 O are produced in the complete combustion, and the total mass percentage of carbon and hydrogen in the B molecule is 65.2% (ie, the mass fraction is 0.652). A solution is acidic and does not colorize the FeCl_3 solution.