Atom economy issueWatch

#1
For this question:

C4H10+10F2 -> C4F10+10HF
Calculate the percentage atom economy for the formation of C4F10.

I did but the mark scheme has the answer as . Am I being an idiot or is the mark scheme wrong?

You can find the paper and mark scheme here.
0
4 years ago
#2
Check your molar mass calculations are right then check you're using the equation correctly.It's molar mass of desired product divided by molar mass of all products *100.

The mark scheme is right by the way

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1
4 years ago
#3
C = 12 not 16.
1
4 years ago
#4
In the book it says differently, it says its the mass of desired product divided by the total mass of reactants x 100.
0
4 years ago
#5
If you've got a balanced equation, the mass of the reactants = mass of products, so it doesn't matter which you define it as.

4x12) + (1x19) x100 = 54.3%
(4x12) + (10x1) + (20x1)
0
#6
Oh god, I really am an idiot. Thanks -_-
0
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