An aqueous solution contains Fe3 + , Co2 + , Cu2 + , Pb2 + and As3 + . Out of these, how many ions will produce white precipitate with dil. HCl ?

Question

An aqueous solution contains Fe3 + , Co2 + , Cu2 + , Pb2 + and As3 + . Out of these, how many ions will produce white precipitate with dil. HCl ? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

All the cations are divided into different groups according to inorganic qualitative analysis.

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

etc. are belongs to group I cations. The group reagent is

d i l . H Cl

.

P b^{2 +}

ions give white ppt. of

P b C l_{2}

with dil.

H Cl

.

Q. An aqueous solution contains Fe3+ , Co2+ , Cu2+ , Pb2+ and As3+ . Out of these, how many ions will produce white precipitate with dil. HCl ?

All the cations are divided into different groups according to inorganic qualitative analysis. Ag+,Pb2+,Hg22+​ etc. are belongs to group I cations. The group reagent is dil.HCl . Pb2+ ions give white ppt. of PbCl2​ with dil. HCl .

Q. An aqueous solution contains $F e^{3 +}$ , $C o^{2 +}$ , $C u^{2 +}$ , $P b^{2 +}$ and $A s^{3 +}$ . Out of these, how many ions will produce white precipitate with dil. $H Cl$ ?

All the cations are divided into different groups according to inorganic qualitative analysis. $A g^{+}, P b^{2 +}, H g_{2}^{2 +}$ etc. are belongs to group I cations. The group reagent is $d i l . H Cl$ .
$P b^{2 +}$ ions give white ppt. of $P b C l_{2}$ with dil. $H Cl$ .