To Decarbonate Soft drink... (1 Viewer)

[Toxic_Tears]

Tells us to plan our own experiment........How does soft drinks decarbonate in the first place??

 

[Ragerunner]

soft drinks decarbonate when exposed to heat.

In this experiement you'd want to make sure no soft drink is lost except the gas, so you'd use a water bath and heat it up ensuring the temperature isn't too high that is causes the liquid to vapourise.

 

[freaking_out]

LoL, when we did it all we did is weigh a can, open it, leave it for 5 mins, then reweigh, then drink the can...never did all the heating stuff.

edit: 4000th post!

 

[Xayma]

But then you get evaporated liquid .

 

[Ragerunner]

Your meant to use Soda Water!!!

oh well, at least you could drink ur's. soda water tastes soooo crap.

 

[Xayma]

Why would you drink it, it would be flat... and the salt one would be awful...

 

[Ragerunner]

Put sugar in it

it will bubble like crazy

 

[kimmeh]

lol do what asians do. put salt into your coke

 

[Xayma]

Or try it with UDLs then drink the rest Or heat it (with the cap thingy on and blow it up)

 

[Ragerunner]

just remove the liquid from the bottle and fill it up with flammable liquid then give it to your friend to heat it up as his experiment

 

[BlackJack]

lol...
um, since there's no way you want to know the actual chemistry behind it...
yeah... it's all equilibrium reactions. i.e. atomic kinetics (physics).

A better way to do it (in the improvements section) is to leave the drink open in a close to 100% relative humid room, and heat gently. Less water will come off.

 

[iambored]

as well as the ones above it also decarbonates when there is decresed pressure. if you look at the carbon-dioxide water equilibrium
Co2 + H2O <-> H2CO3

so if you INCREASE the pressure above the equation, it will go forward, as this side has less moles.

similarly, if you decrease the pressure, it will favour the reverse reaction. therefore forming more carbon dioxide, therefore decarbonating the drink

a way of decreasing pressure is to take the lid off, and shake the bottle up or pour the contents from one container to another.

 

[Xayma]

Originally posted by BlackJack
lol...
um, since there's no way you want to know the actual chemistry behind it...
yeah... it's all equilibrium reactions. i.e. atomic kinetics (physics).

Actually we answered this awhile back, the topic basically went of on a tangent about ozone and its delocalised electrons

 

[victorling]

Originally posted by Toxic_Tears
Tells us to plan our own experiment........How does soft drinks decarbonate in the first place??

read chem in contexts 2
it got detailed 2pages methods of it

 

[babygoose!]

we just poured some soft drink into a Pet bottle with a tight fitting lid, weighed it, shook it up for ages, let the gas escape and weighed it again...worked fine for us

 

[Ragerunner]

what's a pet bottle?

 

[Xayma]

PET bottle is Polysomething or other its the plastic coke bottles etc its recyclable.

 

[smegthehead]

the way we did it was pretty dodgy, we just had a volume of soda water in a beaker on a hotplate and heated it until it was degassed, but we also had a beaker of previuosly degassed water and heated that for the same amount of time as a control to compensate for any soda water that was going to evaporate

 

[artemis122]

yeh, we just weighed it and opened the can and weighed it again in 15 mins....easy

 

[xiao1985]

Originally posted by Xayma
PET bottle is Polysomething or other its the plastic coke bottles etc its recyclable.

PET: poly ethylene teraphthalate i fink...

also, tis bio polymer, so it can be decomposed...
cuz a funnie thing, last time, i brought a juice from dat shop, it was a HDPE (as written on the bottle) n it also says renewable, n i was lyk??? wtf??