why is it when you open a bottle of your favourite pop that the first glass is always fizzier than the last glass?
Any theories????
2006-07-25 22:53:49 · 21 answers · asked by Julie MD 1 in Food & Drink ➔ Non-Alcoholic Drinks
Coz the gas escapes and it looses its fizz. Is this not obvious?
2006-07-25 22:55:51 · answer #1 · answered by 'Rickaaayyyyyyyyyyyyyyy 3 · 0⤊ 0⤋
the "fizz" in soda beverages comes from carbonated water; that is, water that contains dissolved carbon dioxide gas. The dissolved gas has a tendency to precipitate out of the liquid--in other words, form bubbles. This tendency depends on the pressure of the gas in the container. Under high pressure, bubbles do not form. Under low pressure, the carbon dioxide will bubble out of the soda, increasing the pressure until an equilibrium is reached.
An unopened bottle of soda is in a state of equilibrium. Bubbles do not form because the small amount of air in the bottle is under pressure and balances out the bubble-forming tendency of the dissolved carbon dioxide in the soda. When you open the bottle for the first time, you cause a rapid decrease in air pressure in the container, causing many bubbles to form. The escaping carbon dioxide isn't replaced as the soda ages, so eventually the soda loses its carbonation and "goes flat."
Even if you tightly seal the soda container after drinking the first glass, you lose some carbonation each time you open the bottle. Additionally, each time you drink a glass, you (1) decrease the amount of soda (and the available dissolved carbon dioxide) in the bottle, and (2) increase the amount of air in the bottle. The result is that the more you drink the soda, the faster it loses its carbonation. So if you want your soda to stay as fresh as possible, buy single-serving sizes.
2006-07-25 23:07:20 · answer #2 · answered by wickerprints 2 · 0⤊ 0⤋
The more air in the bottle, the more chance the gas has to escape into the air. The gas stops escaping when it reaches a certain pressure. Anyway, with the number of kids in my house, the last glass is just as fizzy as the first.
2006-07-25 22:59:18 · answer #3 · answered by Jeff J 4 · 0⤊ 0⤋
i assume it is to do with the length of time fro opening the bottle. The longer the bottle is open (and not under pressure) the longer the carbon dioxide (?) has to escape, and therefore the less fizzy te drink will be.
If you drank te whole bottle in a minute there would prob be very little difference.
In all honesty I'm just guessing, i'm sure there will be someone who actually knows about this who will come along soon!
2006-07-25 22:58:34 · answer #4 · answered by diab963 2 · 0⤊ 0⤋
Because the sealed bottle is under pressure, and the fizz stays in. After you open the bottle, the fizz starts escaping, and by the last glass, there is a lot less of it in the drink...
2006-07-25 22:57:05 · answer #5 · answered by AlphaOne_ 5 · 0⤊ 0⤋
Because the carbonation is being released into the open airspace in the bottle. Get a pressure pump cap and it help prevent that.
This reminds me of something I did 20-years ago. I installed an old fashion soda counter in my home, which made it's own carbonated water. Unfortunately, I forgot to test the anti-back flow valve. Got up in the morning, sat on the toilet, and felt the water tingle. I had carbonized all the water in the house.
2006-07-25 22:56:23 · answer #6 · answered by Anonymous · 0⤊ 0⤋
I's becuse the gases that keep the pop fizzy escape evrytime you open the bottle. The first glass is always fizzy because no gases have escaped, but you'll notice that gradually with each glass your poor it becomes flatter and flatter.
2006-07-25 22:57:36 · answer #7 · answered by ♥ Nicola ♥ 3 · 0⤊ 0⤋
By the time you get round to pouring the last glass, a lot of the bubbles in the pop have escaped
(next time you pour one, just watch all the bubbles rise to the surface and disappear, the longer you leave it, the flatter it will get)
2006-07-25 22:56:47 · answer #8 · answered by HP 5 · 0⤊ 0⤋
Well that is really simple to be honest. Once you open the bottle, air has gotten into something that had no air in it before you opened it. The Oxygen will make the soda/ wine/ whatever... lose its fizzzzzz
2006-07-25 22:57:15 · answer #9 · answered by ssavage23 4 · 0⤊ 0⤋
the gas is quite simply escaping from the drink - it is put in so it can go too . .tip if its a plastic bottle try squeezing the bottle after you have poured a glass before tightening the lid .
2006-07-25 22:58:01 · answer #10 · answered by christopher o 2 · 0⤊ 0⤋
To avoid this problem, shake the bottle as hard as you can, for about a minute, and then remove the top as quick as possible.
2006-07-25 23:07:46 · answer #11 · answered by Anonymous · 0⤊ 0⤋