I need to find the percentage iron, in cast iron, using a dichromate titration. What is the best way to dissolve the iron to form iron(II) without it oxidising to iron(III)?
• I am doing my investigation on wines and their ethanol content but is there a link between ethanol content and sulphur dioxide content? Thanks. • I’m 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 comp
