It is possible to remove toxic Hg+2(aq) from water by the addition of Na2S(aq) as shown below. Net ionic equation Hg+2(aq) + S2-(aq) ? HgS(s) a) If 500.0 mL of water are contaminated with 5.00 g of Hg(NO3)2 (mol wt 324.7 g/mol) how many moles of Hg(NO3)2 are present in the solution? b) What is the molarity of the mercury nitrate solution? c) How many moles of Na2S(aq) will be needed to remove the mercury? d) How many mL of 0.25 M Na2S(aq) must be added to remove the mercury?

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
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 It is possible to remove toxic Hg+2(aq) from water by the addition of Na2S(aq) as shown below.   

 

Net ionic equation Hg+2(aq)  +  S2-(aq)  ?  HgS(s)

 

  1. a) If 500.0 mL of water are contaminated with 5.00 g of Hg(NO3)2 (mol wt 324.7 g/mol) how many 

moles of Hg(NO3)2 are present in the solution?          








  1. b) What is the molarity of the mercury nitrate solution?








  1. c) How many moles of Na2S(aq) will be needed to remove the mercury? 







  1. d) How many mL of 0.25 M Na2S(aq) must be added to remove the mercury?



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