Question

The complex formed in Brown Ring Test is ___________.

• A. $\left[Fe\right(H_{2}O{)}_4(NO{)}_2{]}^{2+}$
• B. $\left[Fe\right(H_{2}O{)}_5\left(NO\right){]}^{2+}$
• C. $\left[Fe\right(H_{2}O{)}_3(NO{)}_3{]}^{2+}$
• D. $\left[Fe\right(H_{2}O{)}_6\left(NO\right){]}^{2+}$

Answer 1

The correct option is B $\left[Fe\right(H_{2}O{)}_5\left(NO\right){]}^{2+}$

$\left[Fe\right(H_{2}O{)}_5\left(NO\right)]S{O}_4$ is the complex formed in brown ring test done to identify the presence of nirates.