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浙江教育出版社出版的初中《自然科学》第四册及人教版的九年制义务教育三年制初级中学教科书《化学》全一册中都提到了灭火器原理演示实验。装置如图1所示: 化学反应方程式: 酸碱灭火器: Na_2CO_3+2HCl=2NaCl+CO_2↑+H_2O或Na_2CO_3+H_2SO_4=Na_2SO_4+CO_2↑+H_2O
The fourth chapter of the junior high school science journal published by Zhejiang Education Publishing House and the nine-year compulsory education three-year primary school textbook “Chemistry” published in the junior high school book all mention the principle of extinguisher demonstration experiment. The device is shown in Figure 1: Chemical Reaction Equation: Acid-base fire extinguisher: Na2CO3+2HCl=2NaCl+CO2↑+H_2O or Na_2CO_3+H_2SO_4=Na_2SO_4+CO_2↑+H_2O