Question

Waste water from certain industrial chemical processes contains aqueous ions. Since the mercury ion is toxic, it is removed from the waste water by reaction with aqueous sodium sulfide. The products of the reaction are solid mercury( I ) sulfide and aqueous sodium ions.Write a balanced equation for this reaction

Answer 1

^this is not correct.
it says solid Hg2S and Na+ ions (mercury has a subcript of 2 and a superscript of 1+, so mercury(I) sulfide is Hg2S)
Hg2+(aq) + Na2S(aq) --> Hg2S(s) + 2Na+(aq)

Answer 2

oh sorry, i didnt realize the (I) there meant the charge, i was guessing it was part 1 of the question :). My mistake, above is correct ^