carbon dioxide
You stated that carbon dioxide and nitrogen are present, but you did not mention oxygen. Nothing burns without oxygen . . . If you expose limewater to carbon dioxide, it will get cloudy, but will not if you expose it to nitrogen.
You can't express that reaction because there isn't one: as CO2 is a well-known fire extinguishing agent, if you put a burning splint in CO2 the splint will go out. And the reason it will go out is CO2 displaces oxygen, which splints need to burn.
To identify gases using a wooden splint and a flame, you can perform two tests: For hydrogen, introduce a lit wooden splint to the gas; if it produces a characteristic "pop" sound, hydrogen is present. For oxygen, place a glowing (but not burning) wooden splint into the gas; if it reignites, oxygen is confirmed. For carbon dioxide, passing the gas over a glowing splint will extinguish it, indicating the presence of carbon dioxide.
It will extinguish the flame, as it replaces the oxygen around the splint, which is an essential component of combustion. The splint may relight if placed in an oxygen rich environment.
Yes, a burning splint will go out in carbon dioxide gas because carbon dioxide does not support combustion. When the concentration of oxygen is low, the splint will not have enough oxygen to sustain combustion and will be extinguished.
Carbon dioxide (CO2) and nitrogen gas (N2) can extinguish a burning splint. These gases displace the oxygen in the air, which is necessary for combustion, and therefore extinguish the flame.
it goes out A glowing splint needs oxygen to basically keep glowing. It is a small fire in a way. When the glowing splint is added into an environment full of carbon dioxide, the splint goes out. Carbon dioxide in this case smothers the flame restricting the use of oxygen in combustion thus putting the flame out.
Helium is a group 8 element, and therefore a noble gas. It has no free electrons to bond to oxygen, therefore it won't oxidise or combust. So no, it won't. As a side note, you may hear of stars "burning" helium, but this Ian burning, its nuclear fission :)
Yes.
carbon dioxide
Removing from an oxygenated environment. for example placing in a test tube of carbon dioxide
You stated that carbon dioxide and nitrogen are present, but you did not mention oxygen. Nothing burns without oxygen . . . If you expose limewater to carbon dioxide, it will get cloudy, but will not if you expose it to nitrogen.
You can't express that reaction because there isn't one: as CO2 is a well-known fire extinguishing agent, if you put a burning splint in CO2 the splint will go out. And the reason it will go out is CO2 displaces oxygen, which splints need to burn.
Neither, because it dies out. See the answer to the question "what happens to a glowing splint....."
the positive test for oxygen is very simple. all that needs to happen is a vile must be filled 1/4 with hydrogen peroxide and a glowing splint must be inserted in t the vile . the splint will reignite after it is inserted int the vile.
To identify gases using a wooden splint and a flame, you can perform two tests: For hydrogen, introduce a lit wooden splint to the gas; if it produces a characteristic "pop" sound, hydrogen is present. For oxygen, place a glowing (but not burning) wooden splint into the gas; if it reignites, oxygen is confirmed. For carbon dioxide, passing the gas over a glowing splint will extinguish it, indicating the presence of carbon dioxide.