You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Types of Solution

Alkaline solu...

Question

Alkaline solution of $H g {C l}_{2}$ and $K I$ is called _________.

Open in App

Solution

Potassium tetraiodomercurate(II) is an inorganic compound consisting of potassium cations and the tetraiodomercurate(II) anion. It is mainly used as Nessler's reagent, a 0.09 mol/L solution of potassium tetraiodomercurate(II) ( $K_{2} [H g I_{4}]$ ) in 2.5 mol/L potassium hydroxide, used to detect ammonia.

Suggest Corrections

Similar questions

A metal gives two chlorides ‘A’ and ‘B’. ‘A’ gives black precipitate with $N H_{4} O H$ and ‘B’ gives white precipitate .With KI ,‘B’ gives a red precipitate soluble in excess of KI. ‘A’ and ‘B’ are respectively :

{H g C l}_{2}

gives orange ppt with

K I

, which dissolves in excess of it forming

K_{2} {H g I}_{4}

called Nessler's reagent.

If the given statement is true enter 1 else enter 0.

Q. Number of moles of

K I

required to prepare

0.4

moles of

K_{2} H g I_{4}

, when

H g C l_{2}

reacts with

K I

, is:

When a KI solution was added to a solution of mercury (II) chloride, a precipitate mercury (II) iodide formed. A student plotted the mass of the precipitate versus the volume of the KI solution added and obtained the above graph.

As KI is added to

{H g C l}_{2}

solution, there is increase in the mass of

{H g I}_{2}

but after a maximum point is reached, mass of

{H g I}_{2}

decreases. It is due to__________.

Q. Assertion: According to the principle of common ion effect, the solubility of

H g C l_{2}

is expected to be less in an aqueous solution of

K I

than in water.

H g I_{2}

dissolves in an aqueous solution of

K I

to form a clear solution.
Reason: Iodide ion,

I^{-}

is highly polarizable.

Join BYJU'S Learning Program

Alkaline solution of HgCl2 and KI is called _________.

Potassium tetraiodomercurate(II) is an inorganic compound consisting of potassium cations and the tetraiodomercurate(II) anion. It is mainly used as Nessler's reagent, a 0.09 mol/L solution of potassium tetraiodomercurate(II) (K2[HgI4]) in 2.5 mol/L potassium hydroxide, used to detect ammonia.

Alkaline solution of $H g {C l}_{2}$ and $K I$ is called _________.