DINESHKUMAR G
Last Activity: 7 Years ago
Actually, packets containing calcium carbide and calcium phosphide are pierced and thrown into water which then react with water to form C2H2 and PH3.
CaC2 + H2O → Ca(OH)2 + C2H2 (1)
Ca3P2 + H2O → Ca(OH)2 + PH3 (2)
P2H4, by product of the reaction of calcium phosphide with water, catches fire immediately and ultimately burns PH3 and C2H2 also.
This acts as a signal for other ships/ aeroplanes that they need some sort of help.