$FeSO_{4}$ solution mixed with solution in 1:1 molar

cbse
coordinationcompound

#1

$FeSO_{4}$ solution mixed with solution in 1:1 molar ratio gives the test of
${{Fe}^{2+}}$ ion but $CuSO_{4}$ solution mixed with aqueous ammonia in 1 : 4 molar ratio does not give the test of ${{Cu}^{2+}}$ ion. Why?


#2

When $FeSO_{4}$ solution are mixed in 1:1 molar ratio, Mohr’s salt (a double salt) is formed.

Because ${{Fe}^{2+}}$ ions are formed on dissolution of Mohr’s salt, its aqueous solution gives the test of ${{Fe}^{2+}}$ ions,But when $CuSO_{4}$ is’ mixed with ammonia, following reaction occurs.