A mixture of two salts is used to prepare a solution S, which gives the following results : {white precipitate(s) only} {{Dilute NaOH}}{arrow}{{Room temperature}}{S} \; ( {aq. solution of the salts} [{Room temperature}]{{Dilute HCl (aq.)}} {White precipitate(s) only} ) The correct option(s) for the salt mixture is(are) [JEE Adv 2021 P1]

{Pb}({NO}₃)₂ and {Zn}({NO}₃)₂

{Pb}({NO}₃)₂ and {Bi}({NO}₃)₃

{Pb}({NO}₃)₂ and {Hg}({NO}₃)₂

Test Index

Isolation of Elements

Section: Chemistry

Question : 5 of 22

Marks: +1, -0

S

\text{white precipitate(s) only} \overset{\text{Dilute NaOH}}{\rightarrow}

\underset{\text{Room temperature}}{S} \; ( \text{aq. solution of the salts} \xrightarrow[\text{Room temperature}]{\text{Dilute HCl (aq.)}} \text{White precipitate(s) only} )

Solution:

\mathrm{Pb}(\mathrm{NO}_3)_2 \xrightarrow{\text{ dil.HCl }} \mathrm{PbCl}_{\text{ White ppt.}} \downarrow

\mathrm{Bi}(\mathrm{NO}_3)_3 \xrightarrow{\text{ dil.HCl}} \underset{\text{Water Soluble}}{\mathrm{BiCl}_3}

\mathrm{Hg}(\mathrm{NO}_3)_2 \xrightarrow{\text{dil.HCl}} \underset{\text{Water Soluble}}{\mathrm{HgCl}_2}

\mathrm{AgNO}_3 \xrightarrow{\text{dil.HCl}} \underset{\text{White ppt}}{\mathrm{AgCl}} \downarrow

\mathrm{Zn}(\mathrm{NO}_3)_2 \xrightarrow{\text{dil.HCl}} \underset{\text{Water Soluble}}{\mathrm{ZnCl}_2}

\mathrm{Pb}(\mathrm{NO}_3)_2 \xrightarrow{\text{NaOH(dil.)}} \underset{\text{White ppt}}{\mathrm{Pb}(\mathrm{OH})_2} \downarrow

\mathrm{Zn}(\mathrm{NO}_3)_2 \xrightarrow{\text{NaOH(dil.)}} \underset{\text{White ppt.}}{\mathrm{Zn}(\mathrm{OH})_2} \downarrow

\mathrm{Bi}(\mathrm{NO}_3)_2 \xrightarrow{\text{NaOH(dil.)}} \underset{\text{White ppt.}}{\mathrm{Bi}(\mathrm{OH})_3} \downarrow

\mathrm{AgNO}_3 \xrightarrow{\text{NaOH(dil.)}} \underset{\text{Brown ppt}}{\mathrm{Ag}_2\mathrm{O}} \downarrow

\mathrm{Hg}(\mathrm{NO}_3)_2 \xrightarrow{\text{NaOH(dil.)}} \underset{\text{Yellow ppt}}{\mathrm{HgO}} \downarrow

Go to Question:

Prev Question

Next Question