1.

When SnCl2 solution is added excess into a solution of HgCl2 , a white ppt is turning grey. Why?  

Answer»

When SnCl2 solution is added to HgCl2 solution, initially white ppt, of Hg2Cl2 is formed which further reacts with SnCl2 forming metallic grey Hg

2HgCl2 + SnCl2 → SnCl4 + Hg2Cl2 (white)

Hg2Cl2 + SnCl2 → SnCl4 + 2Hg (grey)



Discussion

No Comment Found

Related InterviewSolutions