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Why is sulphuric acid kept in the glass bottle? in fire extinguisher

A glass bottle kept inside the container has sulphuric acid in it. When the knob of the extinguisher is pressed, the bottle breaks. The acid comes in contact with sodium carbonate and carbon dioxide is produced. The carbon dioxide comes out through the nozzle which is directed towards the fire.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

1. they vary with a higher number because boiling is way hotter than melting