During the qualitative analysis of salt with cation y^2+, addition of a reagent (X) to alkaline solution of the salt gives a bright red precipitate.…

During the qualitative analysis of salt with cation $\displaystyle y^{2+}$, addition of a reagent $\displaystyle (X)$ to alkaline solution of the salt gives a bright red precipitate. The reagent $\displaystyle (X)$ and the cation $\displaystyle \left(y^{2+}\right)$ present respectively are: