Iron (+II) is one of the most important oxidation states, and salts are called ferrous salts. Most of the Fe (+II) salts are pale green and contain [Fe(H_2O)_6]^(2+) ion. Fe (+II) compounds are easily oxidised by air. and so are difficult to obtain pure Fe^(2+) form many complexes like K_3[Fe(CN)_6] Anhydrous FeCl_2 is made by

Iron (+II) is one of the most important oxidation states, and salts ar

1.	Iron (+II) is one of the most important oxidation states, and salts are called ferrous salts. Most of the Fe (+II) salts are pale green and contain [Fe(H_2O)_6]^(2+) ion. Fe (+II) compounds are easily oxidised by air. and so are difficult to obtain pure Fe^(2+) form many complexes like K_3[Fe(CN)_6] Anhydrous FeCl_2 is made by
Answer» heating Fe with dilute HCL heating Fe with GASEOUS HCl Reacting Fe with conc. HCl Heating Fe with `Cl_2` gas Solution :`UNDERSET("(Anhydrous)")(Fe + HCl ) rarr Fe_3 [Fe(CN)_6]` By heating REACTIONS takes place in backward direction and `Fe^(+2)` oxidizes to `Fe^(+3)`