Which of the following reagents can be used to distinguish between a sulphite and a…

CHEMISTRY · Single correct · GCSE · Chemistry · Chemical Analysis · Chemical Analysis

Problem

Which of the following reagents can be used to distinguish between a sulphite and a sulphate in solution? (1)

\text{FeSO}_4

(2)

\text{Na}_2[\text{Fe}(\text{CN})_5\text{NO}]

(3)

\text{BaCl}_2 + \text{dil. HCl}

(4)

\text{Na}_3[\text{Co}(\text{NO}_2)_6]