Question

Which of the following can be used to distinguish between a sulphite and a sulphate in solution?

• A. $\text{FeS}{\text{O}}_{\text{4}}$
• B. $\text{N}{\text{a}}_{\text{2}}\left[\text{Fe}{\left(\text{CN}\right)}_{\text{5}}\text{NO}\right]$
• C. $\text{N}{\text{a}}_{\text{3}}\left[\text{Co}{\left(\text{C}{\text{N}}_{\text{2}}\right)}_{\text{6}}\right]$
• D. $\text{BaC}{\text{l}}_{\text{2}}\text{+ dil,HCL}$

Answer 1

The correct option is A $\text{FeS}{\text{O}}_{\text{4}}$

$\text{FeS}{\text{O}}_{\text{4}}$ can be used to distinguish between a sulphite and a sulphate in solution.

Hence, Option "A" is the correct answer.