Okay today is going to be a cool video
So I got this idea today from my Facebook page. People will often message me with suggestions
Somebody messaged me and said hi since we breathe in O2 and breathe out CO2
Is it possible to carbonate a drink with just our breath? So at first,
I thought sure theoretically yes
You could carbonate a drink with your breath because you breathe out co2 they carbonate drink with co2 so yes
But then I thought wait can you actually do it?
How hard would it be to actually carbonate a drink with your breath? So today?
I'm going to be attempting to carbonate this sprite with my own breath
So I let this sprite sit out for about two days with the lid open
And it's completely decarbonated. There's no fizzing in whatsoever
You can see since there still is sugar in there. It still froths up when I shake it
But it does not build up pressure in the bottle when I shake it so the soda is completely flat
No pressure in it so there's a few problems
I'm gonna need to be able to overcome in order to carbonate this drink
The first one is that I need high pressure in here the higher pressure
I can get in the head space the more carbonation. There's gonna be so the more fizz
That'll be in the liquid and the second obstacle is that I need to get pure co2 in the headspace as I can
so first of all to try to get pure co2 in here from your breath is gonna be difficult because
Number one you breathe in air and air is already only about 20% oxygen
The rest is nitrogen and secondly when you breathe in you don't use up all of the oxygen in your breath
You only use a small portion of it, most of the output when you breathe out is oxygen mixed with a little co2
So I need to figure out a way to get pure oxygen to convert to co2 and then completely convert it to co2
So first I'm going to fill it back with pure oxygen. Actually. It's only 95 percent oxygen. I had to laugh of this product
It's called boost oxygen you can buy this at Walmart in a lot of different stores. It's just oxygen that you can breathe
I guess to give you a boost if you need more oxygen *laugh*
But this will work perfect for my experiment here, so I'll fill the bag with oxygen, and then I'm going to breathe in and out
Breathe all the oxygen in the bag
And I'm gonna cycle it a lot of times in and out in and out
Until eventually all the oxygen will be converted into co2 and then in my bag
I'm going to have a bike pump connected to my soda bottle, and I'm gonna pressurize it with the bike pump
So it's going to be taking the co2
That's in the bag, and I'll pressurize my soda bottle with it and see if I can actually recarbonate this drink
With just my breath
So I haven't tried this before, I have no idea if it will work the way I've thought to do it
It seems like it should work
But let's see
So the reason that I don't want any
Nitrogen in the headspace is because it will reduce the partial pressure of co2 in the headspace so for example
Let's say I have a mixture of 80% nitrogen and 20% co2 in here if I were to pressurize that to 10 atmospheres
that means I have a partial pressure of 8 atmospheres of
Nitrogen and 2 atmospheres of co2 and that's just the equivalent of pressurizing it to only 2 atmospheres of pure co2
So it's very important to get the pure gas in there because then you don't get an equivalent reduced pressure
Due to other gases diluting the pressure inside
Okay, first. Let's fill our bag
As much as I can with just pure oxygen
Now I'm going to be converting all this oxygen into co2 and water
So I was breathing into a bag during this
Experiment and not only is it dangerous because you're reducing the amount of oxygen that you're breathing
But also because breathing a lot of co2 so when you just rebreathe the same air over and over again
the co2 actually builds up in your blood
And it actually changes the pH of your blood and your blood
Actually has to stay in a very tight range of pH
If it drops below or above a certain range you can have a lot of side effects. I didn't want to put myself into acidosis
Meaning the pH of my blood drops to a very low level
Due to the co2 building up in my blood in the form of carbonic acid
So essentially it lowers the pH of my blood and that's actually the same reason like if you start hyperventilating
you get tingly fingers and stuff that's because if the
Hyperventilating is getting too much oxygen in your blood
So you lose some of the carbonic acid so it makes the pH of your blood go up?
And it makes you have symptoms such as tingly fingers and everything
That's because the pH of your blood change because you are breathing too much oxygen too fast
Oh, okay
Right now run that oxygen there
Huh, but I think I have a good amount of co2 in there, I don't know how much that converted
But I definitely felt like there wasn't much oxygen left in there
Okay... now... tie this off...
There we go
40 psi okay now while it's pressurized in here. There's another shake to absorb all the co2
Okay, I used up most of the co2 in there, so I'm going to do another round
Okay, let's open it up
See if we have some carbonated sprite now
Whoo okay that's a lot of work to carbonate this. Hopefully it worked
Okay, carbonated sprite with my own breath three, two, one
Looks carbonated, look at that, look at all the bubbles coming out
Okay, let's give it a drink and see
It actually tastes a little bit carbonated
Look at that
Look at all the bubbles in there
Like carbonated a sprite with my own breath
So now that I let out the pressure I can kind of check if there's some dissolved co2 in here and see if it repressurized the bottle
So once I've released the pressure
And then I shake it the co2 that was dissolved in the liquid of high pressure
Should undissolve out of the liquid to go back into the headspace and re pressurize it if it actually did have co2 in the liquid
so you can see
How floppy the bottle is now, but if I shake it *shakes*
See how firm it is
So it definitely has some co2,
a considerable amount of co2 dissolved in the liquid and you can hear when I open it, hear the pressure release
There we go listen
So you can hear the pressure release that means the co2 was dissolved in the liquid because it
Repressurized the bottle back up to its original
partial pressure in the liquid
Okay, so there you go
soda carbonated with my own breath
So why do we breathe out co2
Well when we metabolize our food? We're essentially doing the same thing that happens during combustion
We're taking the energy from long carbon chains and instead of turning it into heat
we're turning it into movement energy, and we also turn a little bit into heat, but the products of combustion are co2 and water and
That's the same thing that we breathe out as co2 in water
Although the pathway is different in order to get to the end products of co2 and water the overall chemical
Equation is the same so you breathe out about two and a half pounds of carbon dioxide every
Single day so the fuel in your body isn't wood
It's actually sugars and fat so when you burn fat or burn sugar
The mass doesn't just disappear it has to go somewhere and the primary excretion
Method for losing fat and sugars from your body is by breathing out
So the carbon atoms that used to be in the fat
And the sugars in your body eventually leaves your body as the carbon and the carbon dioxide
atoms and this actually explains why you lose weight when you exercise because the more you breathe the more you breathe out co2 and that
Co2 is actually taking the carbon atoms from your body and putting them in the air, so you lose weight so for example
Let's say I was 22 pounds overweight, and I wanted to lose that way so I worked out really hard
And I eventually lost those 22 pounds well 18 and a half of those pounds
Would have been lost from just the co2 coming out and Grethe
So why lose that hard-earned fat to the air when you can carbonate your own drinks with it?
Hey everyone. Thanks for watching. I hope you enjoyed it. That was a pretty good suggestion
I was really curious to see what would happen here
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Remember to leave me any questions in the comments section or any suggestions you have I?
Obviously get a lot of good suggestions from you guys and as always. I'll see you next time