Question

Blood red colouration is due to:

• A. Ferric-thiocynade
• B. $\left[{Fe\left(SCN\right){\left(H_{2}O\right)}_5}^{2+}\right]$
• C. Ferrous thiocynade
• D. Ferro-ferric thiocynade

Answer 1

Answer: (A), (B)

The correct options are
A Ferric-thiocynade
B $\left[{Fe\left(SCN\right){\left(H_{2}O\right)}_5}^{2+}\right]$

$FeC{l}_3+KSCN⟶K_3\left[Fe\right(SCN{)}_6]$

The blood red colour is due to ferric thiocyanide.

Blood red colour is also due to an intermediate product general $\left[Fe\right(SCN\left)\right(H_{2}O{)}_5{]}^{2+}$blood red.