Problem

Anhydrous mercurous chloride can be prepared by : a. the reduction of

\text{HgCl}_2

with

\text{SnCl}_2

solution b. the reaction of

\text{HgCl}_2

with

\text{Hg}

c. the reaction of

\text{Hg}

with excess amount of

\text{Cl}_2

d. the reaction of

\text{Hg}

with concentrated

\text{HCl}