wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Suppose you did a cation group I analysis and treated the chloride precipitate with NH3(aq), without first trating it with hot water. What might you observe and what valid conclusions could you reach about cations present, cations absent, and cations in doubt?

Open in App
Solution

If Hg2Cl2,AgClandPbCl2 are precipitated then,
(a) PbCl2 remains insoluble
(b) Hg2Cl2 is blackened by addition of NH3 due to formation of (Hg+HgNH2Cl)
Hg2Cl2+2NH4OHHg+HgNH2Cl+NH4Cl+H2O
(c) AgCl goes into solution as soluble complex [Ag(NH3)2]Cl
AgCl+2NH3[Ag(NH3)2]Cl

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Polyhalogen Compounds
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon