The yellow precipitate formed during the chro | vedclass

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

Question

(B) The chromyl chloride test is used to detect the presence of chloride ions. When a chloride salt is heated with potassium dichromate $(K_2Cr_2O_7)$

Vedclass · Accepted Answer

lead chromate

Vedclass · Answer

(B) The chromyl chloride test is used to detect the presence of chloride ions. When a chloride salt is heated with potassium dichromate $(K_2Cr_2O_7)$ and concentrated sulfuric acid $(H_2SO_4)$,red vapors of chromyl chloride $(CrO_2Cl_2)$ are evolved. When these vapors are passed into a solution of sodium hydroxide $(NaOH)$,a yellow solution of sodium chromate $(Na_2CrO_4)$ is formed. Upon adding lead acetate $(CH_3COO)_2Pb$ to this yellow solution,a yellow precipitate of lead chromate $(PbCrO_4)$ is obtained.

The yellow precipitate formed during the chromyl chloride test is chemically

Similar Questions

What color does lead acetate give with $H_2S$?

Sodium Carbonate cannot be used in place of $(NH_4)_2CO_3$ for the identification of $Ca^{2+}$,$Ba^{2+}$,and $Sr^{2+}$ ions (in group $V$) during mixture analysis because

Statement-$1$: Few drops of $HNO_3$ are added before proceeding to $III^{rd}$ group.
Statement-$2$: For the oxidation of $Fe^{+2} \rightarrow Fe^{+3}$.

The distinguishing reagent between silver and lead salts is:

Assign $A, B, C, D$ from the given type of reaction.
$FeCl_3 + NH_3 \text{ (excess)} \longrightarrow Fe(OH)_3 \downarrow$

Vedclass Test Series

Exam Paper Generator

Online Exam Module