Question

Which ion is detected by Nessler's reagent?

• A. $N{H}_4^{+}$
• B. $Mn{O}_4^{-}$
• C. $P{O}_4^{3-}$
• D. $Cr{O}_4^{2-}$

Answer 1

Answer: (A)

Nessler's reagent $\left(K_{2}Hg{I}_4\right)$ is used for the detection of $N{H}_4^{+}$ ion.