Calculate the weight % of HOAc in pure Vinegar?
You need more information than that. density? molarity? molality? something. The stuff sold in grocery stores is approximately 3-5%.
I have the molarity and it was .188
What's the density?
The density is .9944 grams per mL
To calculate the weight percentage of HOAc (acetic acid) in pure vinegar, we need to know the concentration or molarity of acetic acid in the vinegar.
If you have the molarity, you can use the following formula:
Weight % of HOAc = (molarity of HOAc * molar mass of HOAc) / (density of HOAc * volume of vinegar) * 100%
However, if you do not have the molarity and only have the pH of the vinegar, we can estimate the weight percentage using a simplified method.
First, let's convert the pH to acetic acid concentration (C) using the following equation:
C = 10 ^ (-pH) mol/L
Next, we can assume that vinegar is approximately 5% acetic acid by weight. Therefore, we can calculate the weight percentage using the following formula:
Weight % of HOAc = (C * molar mass of HOAc) / (density of HOAc * 5) * 100%
Note that this is an estimation since the actual acetic acid concentration in vinegar can vary.