Im writing my very detailed plan out for an acid-base titration investigation to find the concentration of acid. How would I justify choosing a 250 cm3 volume of the alkali of known concentration?
• I am doing wine analysis for my A2 investigation. My TLC for volatile and non-volatile acids has not worked well, and I was wondering if you could tell which acids out of tartaric, malic, lactic, acetic, citric and succinic are volatile and which are not. I have looked everywhere for this. Also I have done the pH experiment of titrating wine with sodium hydroxide. I have a graph so that I can read how much I needed to add to get a pH of 8.2. However I have no idea why Ive had to do this and what it shows. What does this tell me and what results can I obtain from it? Any help is appreciated. • I am doing my A2 investigation on wines. I have completed the majority of my write up but am stuck on calculations involving pH and the Henderson-Hasslebach equation and Ka constant. In one particular experiment I performed a titration of sodium hydroxide against the wine sample in the conical flask. I have average values for the titration but am unsure as to how to use them to calculate the pH.
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