Nessler's reagent is

Question

Nessler's reagent is (A)  KHgI4  (B)  K2HgI4+NH4OH  (C)  K2HgI4+KOH  (D)  KHgI4+NH4OH

Tardigrade Admin · Accepted Answer

The mixture of (K2 H g I4+K O H) or (K2 H g I4+N a O H) is known as Nesslel's reagent. It gives a reddish brown precipitate or coloration with NH 3. 2 K 2[ HgI 4]+3 KOH + NH 3 arrow underset( text reddish brown ppt ) HgO⋅ Hg ( NH 2) I +4 KI +3 NaI +2 H 2 O

Q. Nessler's reagent is

$KH g I_{4}$

$K_{2} H g I_{4} + N H_{4} O H$

$K_{2} H g I_{4} + K O H$

$KH g I_{4} + N H_{4} O H$

The mixture of $(K_{2} H g I_{4} + K O H)$ or $(K_{2} H g I_{4} + N a O H)$ is known as Nesslel's reagent.
It gives a reddish brown precipitate or coloration with $N H_{3}$ .
$2 K_{2} [H g I_{4}] + 3 K O H + N H_{3} \to$
$(reddish brown ppt) H g O \cdot H g (N H_{2}) I + 4 K I + 3 N a I + 2 H_{2} O$

Q. Nessler's reagent is

KHgI4​

K2​HgI4​+NH4​OH

K2​HgI4​+KOH

KHgI4​+NH4​OH

The mixture of (K2​HgI4​+KOH) or (K2​HgI4​+NaOH) is known as Nesslel's reagent. It gives a reddish brown precipitate or coloration with NH3​. 2K2​[HgI4​]+3KOH+NH3​→ ( reddish brown ppt )HgO⋅Hg(NH2​)I​+4KI+3NaI+2H2​O

$KH g I_{4}$

$K_{2} H g I_{4} + N H_{4} O H$

$K_{2} H g I_{4} + K O H$

$KH g I_{4} + N H_{4} O H$