Mixture is supposed to contain nitrates of Pb^ 2+ and Hg_2^ 2+ . On adding dil. HCl both are precipitated as white precipitate. Select the correct statement(s)

JEE Advanced Chemistry question

Mixture is supposed to contain nitrates of and . On adding dil. HCl both are precipitated as white precipitate. Select the correct statement(s)

(A) (white precipitate) is soluble in hot water and formation of yellow precipitate on adding KI to hot solution confirms
(B) is blackened by , and change to by aqua-regia. can be detected by KI
(C)Both tests are conclusiveCorrect
(D)None of the tests is conclusive

Answer: (C)

Solution

Both confirmatory tests described are classic, reliable qualitative-analysis procedures. , unlike , is appreciably soluble in hot water; on cooling and adding KI to this hot filtrate, a bright yellow precipitate of forms, conclusively confirming . (calomel) is insoluble in

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-159726