A) \[{{K}_{2}}Hg{{l}_{4}}\]
B) \[{{K}_{2}}Hg{{l}_{4}}+KOH\]
C) \[{{K}_{2}}Hg{{l}_{2}}+KOH\]
D) \[KHg{{l}_{3}}+KOH\]
Correct Answer: B
Solution :
Potassium tetraiodomercurate (II) or \[{{K}_{2}}Hg{{I}_{4}}\] is the inorganic compound consisting potassium cations and tetraiodomercurate (II) anion. It is mainly used as Nessters reagent, which is a mixture of a 0.09 mol/L solution of \[{{K}_{2}}Hg{{I}_{4}}\] in 2.5 mol/L KOH and is used to detect ammonia.
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