Which of the following pairs cannot be separa | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) In qualitative analysis,$H_2S$ is used to precipitate metal sulfides.$Zn^{2+}$ and $Mn^{2+}$ both belong to Group-$IV$ of the basic radical analys

Vedclass · Accepted Answer

$Zn, Mn$

Vedclass · Answer

(D) In qualitative analysis,$H_2S$ is used to precipitate metal sulfides.$Zn^{2+}$ and $Mn^{2+}$ both belong to Group-$IV$ of the basic radical analysis.When $H_2S$ is passed through an alkaline solution (buffered with $NH_4OH$ and $NH_4Cl$),both $Zn^{2+}$ and $Mn^{2+}$ precipitate as $ZnS$ and $MnS$ respectively.Since both precipitate under the same conditions,they cannot be separated by this method.In contrast,other pairs listed belong to different groups or have different solubility products,allowing for separation.

Which of the following pairs cannot be separated by passing $H_2S$ gas?

Similar Questions

$A$ mixture of two salts is not water-soluble but dissolves completely in dilute hydrochloric acid to form a colourless solution. The mixture could be

Which sulphide is soluble in $(NH_4)_2CO_3$?

Which mixture can be separated by a concentrated aqueous solution of sodium hydroxide $(NaOH)$?

Aqueous solution of which of the following cation gives a precipitate with potash alum?

Which reagent is used in the qualitative analysis of Group $IV$ cations?

Vedclass Test Series

Exam Paper Generator

Online Exam Module