Instuctions: Answer the following questions regarding the reaction of mercury(II) chloride with potassium sulfide

Question

Valences:

Hg=+2 Cl=-1

K=+1 S=-2

1.) Write the balanced chemical equation.

2.) Write the ionic equation. Determine which compounds are aqueous and which compound will precipitate.

3.) Write the net ionic equation

Thank you :)

Answer 1

Mercury(II) chloride = HgCl₂

Potassium sulfide = K₂S

(1) HgCl₂(aq) + K₂S(aq) ==> HgS(s) + 2KCl(aq)

(2) Hg²⁺(aq) + 2Cl^-(aq) + 2K⁺(aq) + S^2-(aq) ==> HgS(s) + 2K⁺(aq) + 2Cl^-(aq) ... Ionic equation

(3) Hg²⁺(aq) + S^2-(aq) ==> HgS(s) ... net ionic equation