what is soda -acid fire extinguisher
sodium hydrogencarbonate-NaHCO3 is an metal carbonate. in case of a fire extinguisher ,it contains NaHCO3 insde it nd in d top a bottle containing acid is hanged. When d knob opened,d acid falls on sodium bicarbonate-NaHCO3. A s it is known that metal carbonates on reacting wid acid release CO2 gas , so in case of fire extinguisher, NaHCO3 react wid acid to give out CO2 gas which is used to extinguish fire