- Nov 6, 2006
- Reaction score
That is correct.I think what PPBart is asking is what is the normality of the NaOH used in the TA titration?
Tom, great doc. I think you're missing something though. The last sentence in the section "How to Measure Acidity Using a Titration Kit" is "If you ever run out of sodium hydroxide or phenolphthalein"A quick reference on how to check acidity in wine
did you add 3 drops of the color solution? I bet you didnt.Tom,
My directions say to add the sodium hydroxide untill there is no more color change. I do get to a point where the color turns pink or grey and will not go back to the original color but adding more soloution will give a darker color. I have taken my measurements at the point where more hrdroxide will not give any more change in color.
Are there different kits out there that work differently or am I doing it wrong?
sjo - Not sure how you can get the same results without the phenolphthalein being added, the phenolphthalein is what changes color at pH=8.3. Without it, you will see no color change during the titration.did you add 3 drops of the color solution? I bet you didnt.
The kit should have a small bottle of color solution, syringe,glass vial and sodium hydroxide`
Funny you should ask. Yes I did add the color soloution, however I have forgotten to add it in the past and have obtained the same results with it as without.