strips of magnesium ribbon become corroded on their surface, if they are left lying around in the lab for several days. The corrosion layer is mainly a mixture of magnesium oxide and magnesium hydroxide, but a small amount of magnesium carbonate is sometimes present.
plan experiments
a) find out whether or not the corrosion contains magnesium carbonate
b)to determine the % purity by mass of magnesium in a corroded sample of magnesium ribbon using an acid of your choice