What form/complex is iron(III) found in spinach?
• I have just begun research into a coursework investigation on wine acidity. What defines a volatile acid (i.e. which commonly present acids in wine are volatile), and what’s the best way to identify the end point (when only fixed acidity remains in wine) during distillation? • It was suggested by my teacher to use pieces of fruit, boil them for different periods of time and then plot a graph to show the relationship between the amount of time boiling and the vitamin C content. The next step would be to add either lemon juice or HCl (??) to the fruit that was to be boiled as apparantly these protect the vitamin C and stop it from decomposing so in theory, boiling should not have such a great effect. I cannot, however, find where it is sugested that lemon juice/HCl protect the vitamin C? Also, do you believe it is a reasonable investigation to conduct? • How can I investigate whether iron(II) sulphate tablets get significantly oxidised depending on whether the tablets are crushed or wh
