MyQuestionIcon

1

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

Molecular Speeds - Vrms, Vavg, Vmps

A black color...

Question

A black colored (insoluble in $H_{2} O$ ) solid A does not dissolve in $H N O_{3}$ . Aqua regia can dissolve A forming B. B gives yellow precipitate C with $N a O H$ . B also gives an orange ppt. D with $K I$ . D dissolves in excess of $K I$ forming E. E gives brown ppt. with $N H_{4}^{+}$ salt in presence of $N a O H$ . A is precipitated if $H_{2} S$ gas is passed into the solution of B in $d i l . H C l$ .

The compound C is :

A

H g C l_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

P b C l_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

H g O

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

P b O

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $H g O$
Reaction:
$H g C l_{2} + 2 N a O H \to H g O + 2 N a C l + H_{2} O$
B C

Suggest Corrections

thumbs-up

0

Similar questions

Q. (A) gives white ppt (B) with NaOH, but (B) dissolves in excess of NaOH forming (C). (C) gives white ppt (D) when

H_{2} S

gas is passed into it. (A) also gives white ppt (E) with

B a C l_{2}

. (E) is insoluble in conc.

H N O_{3}

. Identify (A), (B), (C), (D) and (E).

Q. Colourless salt (A) give white ppt (B) with NaOH; ppt (B) dissolves in excess of NaOH to form (C). On passing

H_{2} S

gas into (C) white ppt (D) appears. (A) also gives white ppt (E) with

A g N O_{3}

solution. What is (A)?

Q. Salt (A) makes part of electrode and is insoluble in water. (A) is blackened by

{N H}_{3}

forming (B). (B) is soluble in aqua regia forming (C). (C) gives orange precipitate with KI but the precipitate dissolves in excess of KI forming (D). Here,
(A) :

{H g}_{2} {C l}_{2}

(calomel)
(B) :

({H g N H}_{2} C l + H g)

{H g C l}_{2}

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

If true enter 1, else enter 0.

Q. (A) (colourless solution) gives white ppt (B) with NaOH solution but ppt dissolves in excess of NaOH forming (C). (C) does not give ppt with

H_{2} S

but on boiling with

N H_{4} C l

, white ppt (B) appears. (A) also gives yellow ppt with

A g N O_{3}

State True or False.

A l B r_{3}

A colorless solid (A), when placed into water, produces heavy white turbidity to (B). Solid (A) gives a clear solution in

c o n c . H C l

H C l

solution is added to large amounts of water, (B) forms again. (B) dissolves in dilute HCl. When

H_{2} S

is passed through a suspension of (A) or (B); a black precipitate (C) forms, (C) is insoluble in yellow ammonium sulphide

(N H_{4})_{2} S

C o n c . H_{2} S O_{4}

added to solid (A) liberates gas (D). Gas(D) is water-soluble and gives white precipitate with mercuric salts (E) and not mercuric salts. The black precipitate (C) dissolves in

H N O_{3}

(1:1) to give a solution to which

H_{2} S O_{4}

is added followed by addition of

N H_{4} O H

when a white precipitate (F) is formed. (E) gives a black ppt. (G) with a solution of sodium stannite.

Compound B is not soluble in:

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Molecular Speeds - Vrms, Vavg, Vmps

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon