Oxygen is needed for burning. Things tend to burn more in the presence of oxygen. Without oxygen there is no way a fire can even be produced. Within this demonstration, oxygen is lost and that is what makes this experiment happen. CO2 is the main component that makes this experiment flow.
To make this experiment work a person will need 25 mL of 6 molar concentration HCl, 12 grams of sodium hydrogen carbonate, filter flask with hose attached, funnel filtered with a stopper, a rubber stopper, a lighter, 20 mL of distilled water, a candle with a handle attached to it, and a 600 mL beaker. To start the experiment, you begin by taking 12 grams of the sodium hydrogen carbonate and pouring it into the filter flask. Then use the funnel and pour the 6 molar HCl into the flask and place the stopper on it, then make sure to place the hose of the flask into the 600 mL beaker. Once the sodium hydrogen carbonate and HCl are mixed a gas is produced and a white foamy substance appears. This gas then travels from the flask to the beaker. After this has happened, light the candle and lower it into the beaker. Not even half way down into the beaker the flame will flicker out. After this happens, a person might ask what is going on in this demonstration and why is the flame of the candle went out without putting it in water?
Principally what is happening when you mix together the sodium hydrogen carbonate and HCl compounds is the production of CO2. The CO2 travels from the flask to the beaker. The balanced chemical reaction that is happening during this experiment is: NaHCO3+HCL(aq)NaCl(aq)+H2O(l)+CO2(g). This balanced equation is telling us that salt water and carbon dioxide is produced. CO2 has a higher formula weight, than oxygen, causing it to heavier than O2. This pushes the O2 to the top of the beaker. The further the candle is lowered to the bottom of the beaker the less O2 it is getting. This causes the candle to go out.
In the second part of the experiment,...