Question

Draw structures of the following compounds:
i. Chloric acid
ii. Peroxydisulphuric acid

Hint:

Use Lewis structures to confirm oxidation states and bonding in oxoacids; peroxydisulphuric acid has a characteristic peroxide linkage.

Answer 1

i. Chloric Acid (\( \text{HClO}_3 \)):
\[ \chemfig{Cl(=[:90]O)(-[:30]OH)(-[:270]O)} \] Chlorine is bonded to one hydroxyl group and two double-bonded oxygens.
ii. Peroxydisulphuric Acid (\( \text{H}_2\text{S}_2\text{O}_8 \)):
\[ \chemfig{HO-S(=[:90]O)(=[:270]O)-O-O-S(=[:90]O)(=[:270]O)-OH} \] Contains a peroxide (\( -O-O- \)) bond linking two sulfur atoms, each with two double-bonded oxygens and one hydroxyl group.