when calculating atom economy how do you know which 'substance' in the equation is the 'useful' one???

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how would you know which substance was the 'useful' one from an equation given to you in a gcse exam paper..? would you just guess?? confused.... :/

any help would be greatly appreciated...

thanks.. :)

Posted Fri 18th May, 2012 @ 12:26 by Muzz :P

4 Answers

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They will tell you in the question. Even if they don't tell you exactly they would give you a clue one way or the other. I.e. Calculate the atom economy of the solid product produced in this reaction. :)

Answered Fri 18th May, 2012 @ 13:36 by Nicola
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ok thanks.... :D

Answered Fri 18th May, 2012 @ 14:26 by Muzz :P
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This is exactly what I revising today in my chemistry lesson. Basically, the question would say what the point of the reaction was (maybe to make copper, etc). The final value of copper from the reaction is the "useful product".

Hope this helps.

Answered Fri 18th May, 2012 @ 14:32 by RFC1871 (Eden32)
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thanks for the help... :D

Answered Fri 18th May, 2012 @ 14:36 by Muzz :P