introductory chemistry re https//session.masteringchemistry.com/myct/itemView?of

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introductory chemistry re https//session.masteringchemistry.com/myct/itemView?offsetanext&assignmentProblemlD-86391921; tions Exercise 7.38 rcise 7.38 Part A aste water from certain industrial chemical processes ontains aqueous Hga ions. Since the mercury ion is toxic. is removed from the waste water by reaction with aqueous sodium sulfide. The products of the reaction are solid mercury( 1) sulfide and aqueous sodium ions Write a balanced equation for this reaction Express your answer as a chemical equation. Identify all of the phases in your answer. 03 Hg, (aq)+2Na, S(aq)2HgS(s)+4Na (aq) Submit My Answers Give Up Incorrect:; Try Again; 5 attempts remaining Type here to search e @

Explanation / Answer

Ans 7.38 :

To balance a chemical reaction , start by identifying the elements on both the sides of the reaction.

Then count the number of atoms on each side and write it down.

Then equalise the number of atoms on the left to that on right and check.

So the balanced reaction here will be given as :

Hg22+ (aq) + Na2S (aq) = Hg2S (s) + 2Na+ (aq)

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