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2016年高考,贵州、云南、广西使用的是全国高考新课标3卷,其中第26题是以工艺过程为载体来考查学生化学素养的试题,现对该试题作一评析。一、题目过氧化钙微溶于水,溶于酸,可作分析试剂、医用防腐剂、消毒剂。以下是一种制备过氧化钙的实验方法。回答下列问题:1.碳酸钙的制备。碳酸钙的制备如图1所示。
In 2016, college entrance examination, Guizhou, Yunnan and Guangxi used 3 new curriculums in the nationwide college entrance examination. Among them, the 26th exam is a test that examines the students’ chemical literacy with process as the carrier. First, the title of calcium peroxide slightly soluble in water, soluble in acid, can be used for analysis of reagents, medical preservatives, disinfectants. The following is a preparation of calcium peroxide experimental method. Answer the following questions: 1. Preparation of calcium carbonate. The preparation of calcium carbonate is shown in Figure 1.