J. D. Lee Solutions for Chapter: Group 16 - the Chalcogens, Exercise 1: Exercise 1

Describe the action of heat on ${\mathrm{NaHSO}}_3$.

Compare the structures of the ions- ${\mathrm{SO}}_4^{2-}$ and ${\mathrm{S}}_2{\mathrm{O}}_3^{2-}$.

Why are sulphurous acid and sulphites reducing?

Compare and contrast sulphuric acid, selenic acid and telluric acid.

How is ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3$ made? Explain its uses in photography and volumetric analysis.

What are the main fluorides of sulphur? How are they made, what are their structures and what are their uses?

Explain, why ${\mathrm{SF}}_6$ is unreactive towards water but ${\mathrm{TeF}}_6$ reacts.

Suggest reasons why ${\mathrm{SF}}_6$ exists but, ${\mathrm{OF}}_6$ does not.