collecting gas

hey everyone my freind is needed to collect and store 50ml of any gas she chooses and well, we have no idea how to do it. any ideas???? it can be any gas just as long as its a simple easy way to get the gas thanks :)

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octavian2349 years ago
to harvest gen as get somme cocacola opn it and put a balloon ontop of it and shake up the coke and all the c02will go in the balloon
depends on how the gas is made

when collecting gas from, say, alkaseltzer and water, you could use a gas-collecting apperatus. how it works is the reaction takes place inside a vial with the hose coming out of the top the vial must be over the basin or else it will fill with water. the hose goes into a water basin with a hole on the bottom connected to the other side of the hose. in the water basin there is a jar filled 100% with water THAT IS OVER THE HOLE. when the reaction occours the gas goes out the rube and into the jar, letting water out. the water is forced out because gas is lighter than air, creating bubbles.

but if say, collecting gas from a fart....think...i wouldnt recommend it though =P

Hmm, many gases are not lighter then air, but we know what you mean ;-)
if you look at the picture there IS no air only pure (insert gas here)
Sorry, I was just commenting on because gas is lighter than air and I forgot to include the quote I was commenting on......
but air is a gas
I just quoted you, I can't explain what you meant LOL ;-)
amyyy (author)  ich bin ein pyro9 years ago
haha yeah we already thought of fart in a jar. the instructor dodn't like that idea very much :P we were thinking would it be possible to use vinegar and soda water in a jar to create carbon dioxide???? we are very unscientific by the way.thanks so much for ur reply to
Goodhart amyyy9 years ago
Soda water, if you mean what is sometimes call Seltzer water, that is simply water (sometimes with quinine added) with an excess of CO2 forced to be dissolved while under pressure. It starts to "fizz" once the pressure is released.

To "produce" CO2 you could use vinegar and Sodium Bicarbonate (baking soda powder) OR simply water and Baking Powder (baking Powder reacts directly with water).
would you like me to draw a picture of it?
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