Analytical ChemistryHard
Question
Which of the following is insoluble in dil. HNO3 but dissolves in aquaregia ?
Options
A.HgS
B.PbS
C.Bi2 S3
D.CuS.
Solution
PbS, Bi2S3 and CuS dissolve in dilute HNO3 forming nitrates but HgS dissolves in aquaregia forming HgCl2.
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