Which of the following compounds changes the | vedclass

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

Question

(A, B, C, D) Aqueous $FeCl_3$ solution is yellow in color. When $K_4[Fe(CN)_6]$ is added to $FeCl_3$,it forms a blue-colored precipitate of Prussian b

Vedclass · Accepted Answer

$K_4[Fe(CN)_6]$

Vedclass · Answer

(A, B, C, D) Aqueous $FeCl_3$ solution is yellow in color. When $K_4[Fe(CN)_6]$ is added to $FeCl_3$,it forms a blue-colored precipitate of Prussian blue,$Fe_4[Fe(CN)_6]_3$. When $H_2S$ is added,it reduces $Fe^{3+}$ to $Fe^{2+}$ and forms a milky white precipitate of sulfur. When $NH_4CNS$ or $KCNS$ is added,it forms a blood-red colored complex,$[Fe(CNS)(H_2O)_5]^{2+}$. Since all the given options result in a color change,this is a multiple-correct type question. However,in standard testing contexts,$NH_4CNS$ or $KCNS$ are the most common reagents used to test for $Fe^{3+}$ ions via a distinct color change.

Which of the following compounds changes the color of an aqueous $FeCl_3$ solution?

Similar Questions

The group reagent for the precipitation of group $II$ basic radicals in qualitative analysis is:

The colour of the precipitate produced by adding $NaOH$ solution to $HgCl_2$ is

Which of the following sulfides is yellow in color?

The distinguishing reagent between silver and lead salts is:

Which of the following is not precipitated as sulphide by passing $H_2S$ in the presence of concentrated $HCl$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module