If I have an iron-platinum alloy, can I put this into a solution of $\ce{HCl}$ to dissolve the iron, leaving a $\ce{Pt}$ precipitate?
I know that Fe dissolves in $\ce{HCl}$ to form $\ce{FeCl2}$ and $\ce{H2}$, and I know that $\ce{Pt}$ does not dissolve in $\ce{HCl}$.
But will the $\ce{Fe-Pt}$ bonding affect the Fe dissolution?