Question

I was told to find the concentration of acetic acid in vinegar when only using baking soda and common lab equipment. Can someone tell me how

Thanks

Answer 1

I wonder how "common lab equipment" is defined. I wonder how accurately this is to be done.
Does that mean we can't use any other chemical?
I would prepare a 0.1M baking soda solution (NaHCO3) and fill a buret. Add phenolphthalein indicator, then add NaHCO3 from buret until the indicator turned. Calculate M acetic acid.

Answer 2

Well I asked about using phenolphthalein and my teacher said that it was not a good idea. But when I was looking online, I saw some experiments using the amount of gas produced to find the amount of acetic acid in a 20Ml of vinegar in g/ml

If you could tell me how this this done, that would be a massive help.

Also, I tried another way in which I reacted baking soda and vinegar, then put the products on a hot plate to evaporate the H2O so I was only left with the sodium acetate. After that, I calculated how much HCl I would need to react it and put in that amount of HCl so I now have a a solution of acetic acid and NaCl. the problem now is that I don't know how to isolate the acetic acid.

If you are able to tell me how they figured out the g/ml of acetic acid in vinegar by measuring the amount of gas produced of tell me how you can isolate the acetic acid from NaCl you would be a HUGE help.

Thanks