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一、化学反应原理初中化学九年义务教育人教版教材上册第130页【探究】灭火的原理2是泡沫灭火器反应原理的实验。如图7-9所示,利用饱和碳酸钠溶液、浓盐酸反应,产生大量的二氧化碳,从而使吸滤瓶内压强增大,使瓶内产生的气泡及部分药品喷出,从而显示灭火器的原理。
First, the chemical reaction theory Junior high school chemistry nine years of compulsory education PEP textbooks Volume on page 130 [explore] the principle of fire 2 is the foam fire extinguisher reaction principle experiment. As shown in Figure 7-9, the use of saturated sodium carbonate solution, concentrated hydrochloric acid reaction, resulting in a large amount of carbon dioxide, so that the suction bottle pressure increases, so that the bubbles generated in the bottle and some of the drugs are sprayed to show the principle of fire extinguishers .