【Daily Question】Chemical Analysis Version, 2021.8.11
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When calcium carbide or acetylene, which are used as chemical raw materials, catch fire, it is strictly prohibited to use ( ) to extinguish the fire. A. CO2 fire extinguisher B. Carbon tetrachloride fire extinguisher C. Dry powder fire extinguisher D. Dry sand B
This post was last edited by yyszyj on 2021-8-11 08:37: A, CO2 fire extinguishers； The main component of calcium carbide is CaC2, which reacts violently with the water produced by carbon dioxide foam extinguishers, producing acetylene: CaC2 + 2H2O → Ca(OH)2 + CH≡CH↑, with heat being released in the process. The formation of acetylene can lead to explosions.