Q. $HgCl_2$ and $I_2$ both when dissolved in water containing $I^-$ ions the pair of species formed is :
A) $HgI_2$, $I_3^-$
B) $HgI_2$, $I^-$
C) $HgI_4^{2-}$, $I_3^-$
D) $Hg_2I_2$, $I^-$
Explanation
[Solution] $HgCl_2 + 4I^- \rightarrow HgI_4^{2-}$ and $I_2 + I^- \rightarrow I_3^-$. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.