Question

Blood red coloured solution is produced when ferric chloride solution is treated with:

• A. $KSCN$
• B. $KOH$
• C. $K_4\left[Fe\right(CN{)}_6]$
• D. $K_3\left[Fe\right(CN{)}_6]$

Answer 1

The correct option is A $KSCN$

$FeC{l}_3$ when reacted with $KSCN$, produces blood red colour. It is a qualitative test for $F{e}^{3+}$ ion.
$F{e}^{3+}+KSCN\to \underset{\left(\text{Blood-red}\right)}{\left[Fe\right(SCN){]}^{2+}}$