Theoretical Yield, Actual Yield

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sharonvivianv
Posts: 63
Joined: Fri Apr 06, 2018 11:05 am

Theoretical Yield, Actual Yield

Postby sharonvivianv » Fri Jun 08, 2018 2:43 pm

Which yield are we usually given? And which do we use to make further calculations?

Andrew Evans - 1G
Posts: 47
Joined: Fri Apr 06, 2018 11:02 am
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Re: Theoretical Yield, Actual Yield

Postby Andrew Evans - 1G » Fri Jun 08, 2018 4:28 pm

Hello Sharon... again

So in questions that involve actual vs. theoretical yield it goes as such:
Actual yield will be specified by the context as "during an experiment, this much product formed" or some experimental observation. However experimental observations are hardly ever exactly what we would expect.
That theoretical yield is how much product you would expect to form based on calculations using the amount of reactant.

So most reactions occur at at least a slight equilibrium, so not all reactants turn to products. Sometimes reactants might stick to the side of a beaker and not actually react. There are many things that can occur, and because of these things the observed "actual yield" is usually somewhat lower than the theoretical yield.

That's when you do a percent yield calculation.

-Andrew Evans
Section 1G


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