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

Byju's Answer

Standard XII

Chemistry

Magnetic Properties

An aqueous so...

Question

An aqueous solution containing $H g_{2}^{2 +}, H g^{2 +}, P b^{2 +}, F e^{2 +}$ is treated with dil HCI. The cations that may be precipitate are __________.

H g_{2}^{2 +}

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

H g^{2 +}

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

P b^{2 +}

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

F e^{2 +}

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

Open in App

Solution

The correct options are
A $H g_{2}^{2 +}$
C $P b^{2 +}$
$H g_{2}^{2 +} a n d P b^{2 +}$ give white precipitate with HCI viz $H g_{2} C l_{2} a n d P b C l_{2} . H g^{2 +}$ gives $H g C l_{2}$ which is soluble. Similarly, $F e C l_{2}$ is also soluble. So, cations that precipitates are $H g_{2}^{2 +} a n d P b^{2 +}$ .

Suggest Corrections

Similar questions

Q. An aqueous solution contains

H g^{2 +}

H g_{2}^{2 +}

P b^{2 +}

, and

C d^{2 +}

. Out of these, how many ions will produce white precipitate with

d i l u t e H C l

Q. An aqueous solution contains following ions

H g_{2}^{2 +}, H g^{2 +}, P b^{2 +}

and

C d^{2 +}

. On adding

H

which of these will precipitate?

For the purpose of systematic qualitative analysis, cations are classified into various groups on the basis of their behavior against some reagents. The group reagents used for the classification of most common cations are hydrochloric acid, hydrogen sulphide, ammonium hydroxide, and ammonium carbonate. Classification is based on whether a cation reacts with these reagents by the formation of precipitates or not.

An aqueous solution contains

H g^{2 +}

H g_{2}^{2 +}

P b^{2 +}

and

C d^{2 +}

. The addition of

2 M H C l

will precipitate :

An aqueous solution of a mixture of two inorganic salts, when treated with dilute HCl, gave a precipitate (P) and a filtrate (Q). The precipitate (P) was found to dissolve in hot water. The filtrate (Q) remained unchanged when treated with $H_{2} S$ in a dilute mineral acid medium. However, it gave a precipitate (R) with $H_{2} S$ in an ammoniacal medium. The precipitate R gave a coloured solution (S) when treated with $H_{2} O_{2}$ in an aqueous NaOH medium.

The precipitate P contains

Q. An aqueous solution of a substance gives a white precipitate on treatment with dil

H C l

, which dissolved on heating. On passing

H_{2} S

in hot acidic solution a black precipitate is formed. The substance is:

Join BYJU'S Learning Program

An aqueous solution containing Hg2+2,Hg2+,Pb2+,Fe2+ is treated with dil HCI. The cations that may be precipitate are __________.

The correct options are A Hg2+2 C Pb2+Hg2+2andPb2+ give white precipitate with HCI viz Hg2Cl2andPbCl2. Hg2+ gives HgCl2 which is soluble. Similarly, FeCl2 is also soluble. So, cations that precipitates are Hg2+2andPb2+.

An aqueous solution containing $H g_{2}^{2 +}, H g^{2 +}, P b^{2 +}, F e^{2 +}$ is treated with dil HCI. The cations that may be precipitate are __________.