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What is the ratio of baking soda to vinegar that produces the most gas? Answered

It be helpful if you gave me a measurment like cups or something.



Best Answer 9 years ago

for every 1/2 cup of vinegar add 2 1/2 to 3 table spoons of baking soda

Thank you this info was very helpful in putting together my sons volcano project.. Ignore that jgreen42, he is just jealous he is not as smart and helpful as you are!!

Let's say your vinegar is 5% v/v, you've got 5ml acetic acid per 100ml vinegar. Approximate this to 5g, it's 83mmol. A 1:1 mix with sodium bicarbonate would require 7g (per 100ml). Using more vinegar would make the reaction faster, but you'd have more gas dissolve.
And it does depend upon the acid content of the vinegar of course.


so. ...it should look by sight like a 1:1 mix or what?

If your vinegar is 5% it won't be 1:1. You'd need to measure these things in some way, but you'd be after about 10 times the weight of vinegar, maybe 10 x vol, but it's hard to say with powders. L