How many grams of carbon dioxide for 2 liters of 40 degree water at 35 psi?

[wolfgang kern]

The calculations never troubled me before today because it just works.

But I'm suddenly tasked with manning the carbonation science booth for at
the local neighborhood summer block party and I want to have at least some
basic mathematical "science" behind me on the paperboard descriptions.

I'll be having the kids evacuate the air out of 2-1/2 liter soda bottles
filled to only 2 liters of 40 degrees Fahrenheit water and then thety will
carbonate to about 30 psi but I don't know how many grams of CO2 that is.

Where can I find that calculation given 100% partial pressure of CO2?

[Bob F]

Post by wolfgang kern
The calculations never troubled me before today because it just works.
But I'm suddenly tasked with manning the carbonation science booth for
at the local neighborhood summer block party and I want to have at least
some basic mathematical "science" behind me on the paperboard descriptions.
I'll be having the kids evacuate the air out of 2-1/2 liter soda bottles
filled to only 2 liters of 40 degrees Fahrenheit water and then thety
will carbonate to about 30 psi but I don't know how many grams of CO2
that is.
Where can I find that calculation given 100% partial pressure of CO2?

1/2 liter of 30psi CO2 for 2 liters of H2O is not going to make very
carbonated water, unless that 30psi is maintained for a significant
time, like hours, unless broken into very fine bubbles as it is put into
the bottles. For my corny kegs, I have to add CO2 many times over
several days to get it properly carbonated, or I have to leave the CO2
tank valve open for hours.

1 liter at 30 psi is about 2 liters of CO2 at atmospheric pressure. Most
of that pressure will go away by the time the CO2 is dissolved in the water.

[Bob F]

Post by Bob F

Post by wolfgang kern
The calculations never troubled me before today because it just works.
But I'm suddenly tasked with manning the carbonation science booth for
at the local neighborhood summer block party and I want to have at
least some basic mathematical "science" behind me on the paperboard
descriptions.
I'll be having the kids evacuate the air out of 2-1/2 liter soda
bottles filled to only 2 liters of 40 degrees Fahrenheit water and
then thety will carbonate to about 30 psi but I don't know how many
grams of CO2 that is.
Where can I find that calculation given 100% partial pressure of CO2?

1/2 liter of 30psi CO2 for 2 liters of H2O is not going to make very
carbonated water, unless that 30psi is maintained for a significant
time, like hours, unless broken into very fine bubbles as it is put into
the bottles. For my corny kegs, I have to add CO2 many times over
several days to get it properly carbonated, or I have to leave the CO2
tank valve open for hours.
1 liter at 30 psi is about 2 liters of CO2 at atmospheric pressure. Most
of that pressure will go away by the time the CO2 is dissolved in the water.

https://www.toppr.com/ask/en-us/question/how-many-grams-of-carbon-dioxide-gas-is-dissolved-in-a-1-l-bottle-of/

[dlzc]

Post by wolfgang kern
The calculations never troubled me before today because it just works.
But I'm suddenly tasked with manning the carbonation science booth for at
the local neighborhood summer block party and I want to have at least some
basic mathematical "science" behind me on the paperboard descriptions.
I'll be having the kids evacuate the air out of 2-1/2 liter soda bottles
filled to only 2 liters of 40 degrees Fahrenheit water and then thety will
carbonate to about 30 psi but I don't know how many grams of CO2 that is.
Where can I find that calculation given 100% partial pressure of CO2?

A word of caution. Dissolution of CO2 in water is exothermic. They have liquid-to-liquid heat exchangers to carry away the waste heat when making carbonated waters and soda.

David A. Smith

[Martin Brown]

Post by dlzc

Post by wolfgang kern
The calculations never troubled me before today because it just works.
But I'm suddenly tasked with manning the carbonation science booth
for at the local neighborhood summer block party and I want to have
at least some basic mathematical "science" behind me on the
paperboard descriptions.
I'll be having the kids evacuate the air out of 2-1/2 liter soda
bottles filled to only 2 liters of 40 degrees Fahrenheit water and
then thety will carbonate to about 30 psi but I don't know how many
grams of CO2 that is.
Where can I find that calculation given 100% partial pressure of CO2?

A word of caution. Dissolution of CO2 in water is exothermic. They
have liquid-to-liquid heat exchangers to carry away the waste heat
when making carbonated waters and soda.

I doubt that you can persuade it to dissolve at a mere 30psi.

I'm pretty sure the soda siphons of old were much more robust steel
pressure vessels and at about 3-5 bar and slow release of the gas from a
small CO2 cartridge could be made to dissolve by shaking as it was
slowly released. Using very cold water helps to allow it to dissolve.

I haven't checked these data but it looks plausible to me:

https://www.prairiemoon.biz/sosisebofa.html

Many decades since I recall making soda water at home.

In the early days the glass ones could go spectacularly wrong! They
often had a wire mesh around them to prevent glass shards from flying.