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1.有关物质的量的计算例1(江苏化学卷,节选)碱式碳酸铝镁[MgaAlb(OH)c(CO3)d·x H2O]常用作塑料阻燃剂。为确定碱式碳酸铝镁的组成,进行如下实验:1准确称取3.390 g样品与足量稀盐酸充分反应,生成CO20.560 L(已换算成标准状况下)。2另取一定量样品在空气中加热,样品的固体残留率(固体样品的剩余质量/固体样品的起始质量×100%)随温度的变化如图1所示(样品
1. Calculation of the amount of related substances Example 1 (Jiangsu Chemical Vol., No.1) Alkali aluminum magnesium carbonate [MgaAlb(OH)c(CO3)d.xH2O] is often used as a plastic flame retardant. In order to determine the composition of basic aluminum magnesium carbonate, the following experiment was performed: 1 Accurately weigh 3.390 g of the sample and fully react with a sufficient amount of dilute hydrochloric acid to produce CO20.560 L (converted to standard conditions). 2 In addition, a certain amount of sample is heated in air, and the solid residue rate of the sample (the remaining mass of the solid sample/the initial mass of the solid sample × 100%) changes with the temperature as shown in Fig. 1 (sample