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The burning of 18.0 g of carbon produces 55.0 g of carbon dioxide. What is the theoretical yield of #CO_2#? How do you calculate the percent yield of #CO_2#?

Answer 1

Ellie Andrews

We need a stoichiometric equation:

#C(s) + O_2(g) rarr CO_2(g)#

And, given the #1:1# #"stoichiometry,"#

#%"yield"="Moles of carbon dioxide"/"Moles of carbon"xx100%#

#=((55.0*g)/(44.01*g*mol^-1))/((18.0*g)/(12.011*g*mol^-1))xx100%=83%#

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Answer 2

Peyton Adams

Theoretical yield of CO2: 44.0 g

Percent yield of CO2: ( \frac{55.0 , \text{g (actual yield)}}{44.0 , \text{g (theoretical yield)}} \times 100 )

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.