[KimK1133]

Hi,

this is my first time doing this and I hope i'm on the correct forum. I'm trying to figure out how much baking soda I would need to create a pressure of 15 psi in a baking soda and vinegar reaction.

What I have so far is the chemical equation;

NaHCO₃ + HC₂H₃O₂  NaC₂H₃O₂ + H₂O + CO₂

Vinegar is a liquid so I have the amount of litres I need which is 0.118294 L (or 1/2 a cup). This is the highest amount i'm allowed to use.

I was thinking that I could use the ideal gas law to find the number of moles of carbon dioxide gas I would need and then use stoichiometry to find how many moles of baking soda I need. I have the pressure, which converted to kPa is 103.421. I also have the temperature which is 298.15 K and I have the constant R. I don't have the volume of CO₂.

I'm not sure where to go from here and any help would be really appreciated.

Thank You!

[Borek]

You are on the right track, but there is no way to answer the question without the final volume  of the gas.

[KimK1133]

Would i be able to use the volume of the container? I have no idea how I would find the final volume of the gas. Thank you for your help.

[Borek]

Gas by definition occupies whole given volume, if you are given the container volume that's exactly what you need.