Write a short note on soda-acid fire extinguisher

Write a short note on soda-acid fire extinguisher.

  • Soda-acid fire extinguishers contain sodium bicarbonate and sulphuric acid.
  • It is the most effective house-hold fire extinguisher.
  • It consists of a strong iron vessel with a side discharge nozzle. The iron vessel is filled with sodium bicarbonate solution.
  • A small glass bottle, filled with sulphuric acid is supported inside the iron vessel. A knob is fixed just above this bottle.
  • On striking the knob, the acid bottle breaks open into the sodium bicarbonate solution. The sulphuric acid reacts with sodium bicarbonate to form sodium sulphate, water and carbon dioxide.