Answer to Question #14458 in Physical Chemistry for kelvin

Question

why are iron compounds more readily oxidised by air in an alkaline medium than in an acidic medium

Answer 1

Iron compounds more readily oxidised by air in acidic medium,cause

Fe2+
+1/2 O2 + H2O + 1ê =Fe3+ 2 OH-

In alkaline medium equilibrium reaction
will shift toward the formation of primary products,so better is acidic
medium

FeSO4+O2+H2SO4=Fe2(SO4)3+H2O