Yield and atom economy of chemical reactions (chemistry only)

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Question 14
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Barium sulfate is an insoluble salt used as a contrast agent in medical imaging. It is produced by the reaction between barium chloride solution and sodium sulfate solution.

The equation for the reaction is: BaCl2(aq)+Na2SO4(aq)→BaSO4(s)+2NaCl(aq)\text{BaCl}_2(\text{aq}) + \text{Na}_2\text{SO}_4(\text{aq}) \rightarrow \text{BaSO}_4(\text{s}) + 2\text{NaCl}(\text{aq})BaCl2​(aq)+Na2​SO4​(aq)→BaSO4​(s)+2NaCl(aq)

Calculate the percentage atom economy for the production of barium sulfate by this reaction.

Give your answer to 3 significant figures.

Relative formula masses (MrM_rMr​):

  • BaCl2=208\text{BaCl}_2 = 208BaCl2​=208
  • Na2SO4=142\text{Na}_2\text{SO}_4 = 142Na2​SO4​=142
  • BaSO4=233\text{BaSO}_4 = 233BaSO4​=233
  • NaCl=58.5\text{NaCl} = 58.5NaCl=58.5
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Yield and atom economy of chemical reactions (chemistry only) Questions

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