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Mercury(II) chloride
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==Synthesis== Mercuric chloride is obtained by the action of [[chlorine]] on mercury or on [[mercury(I) chloride]]. It can also be produced by the addition of [[hydrochloric acid]] to a hot, concentrated solution of mercury(I) compounds such as the [[mercury(I) nitrate|nitrate]]:<ref name=EB1911/> :Hg<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub> + 4 HCl β 2 HgCl<sub>2</sub> + 2 H<sub>2</sub>O + 2 NO<sub>2</sub> Heating a mixture of solid [[mercury(II) sulfate]] and [[sodium chloride]] also affords volatile HgCl<sub>2</sub>, which can be separated by [[Sublimation (physics)|sublimation]].<ref name=EB1911/>
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