Question

When fecr2 is fused with na2co3 in the presence of air it gives a yellow solution of compound (A). Compound (A)on acidification gives compound (B).compound (B) on reaction with kcl forms an orange clouresd compound (C).An acidified solution of compound (C)oxidise na2so3 to(D) . Identify A,B,C,D?

Answer 1

Answer:

b compound maybe

hope it is correct