[hifly]

Hi,

I am just starting out making Vinegar, I know very little about chemistry although i do know how to perform a titration, its just dealing with all the numbers afterwards that i have a problem with.

I have made a quick calculator in excel that i think will give me the vol/vol of acetic acid in my vinegar.

could someone have a quick look at it and tell me if it is giving the correct answers, the answer looks to be in the right ball park but the constants i have used have come from a lot of time searching the net and not really understanding what i am seeing/reading.

I have purchased a standard NaOH titration solution that says its 0.1 M   Titer = 1.015
i use phenolphthalein indicator.

Here is a link to the file in my drop box.
https://www.dropbox.com/s/xb36y2bkkxi6jlk/Vinegar%20%25%20calculator.xlsx

Cheers

Vince

[Borek]

Give some examples of numbers you get.

Or compare with the results given by the stoichiometry calculator.

[hifly]

examples.

5ml titration fluid is giving 5.94% acetic
2.5ml is giving 2.97%
7.3ml is giving 8.67%
10ml is giving 11.88%

cheers

[Borek]

What is the procedure you follow when titrating? Vinegar volume?

[hifly]

i use 0.5ml vinegar, about 10ml distilled water 4 drops of indicator, then 0.1M NaOH until colour change, record amount of NaOH solution used.

[Borek]

i use 0.5ml vinegar

Looks OK to me then.

[hifly]

Thanks