Percent Yield

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Katie McCombs 3G
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Joined: Wed Sep 21, 2016 2:57 pm

Percent Yield

Postby Katie McCombs 3G » Sun Oct 30, 2016 4:26 pm

Can someone remind me of the formula for percent yield in the event of a limiting reactant?

nikita bhat 2D
Posts: 29
Joined: Wed Sep 21, 2016 2:59 pm

Re: Percent Yield

Postby nikita bhat 2D » Sun Oct 30, 2016 6:22 pm

When solving for a limiting reactant problem that asks for the percent yield of the product these are the steps to follow:
1. convert the moles/grams of the reactants to the moles/ grams of the product that you have to find the percent yield of. Depending on whether the product amount given is in moles or grams is what you convert to. Compare the the results of the product of the reactants.
2. The reactant with the smallest product is the limiting reactant.
3. percent yield = ( actual yield / theoretical yield ) x 100

Posts: 55
Joined: Wed Sep 21, 2016 3:00 pm

Re: Percent Yield

Postby Alyssa_Hsu_2K » Sun Oct 30, 2016 7:31 pm

Percent yield is actual yield/theoretical yield.
Actual yield is determined experimentally and will be given to you in the question.
You can calculate theoretical yield by first determining the limiting reactant, then use its molar ratio to calculate the amount in grams for a final product.
Then, you divide the actual yield(which again, is given to you) by the theoretical yield.

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Re: Percent Yield

Postby Jessica_Nakahira_1G » Sun Nov 06, 2016 4:26 pm

Also when providing your answer there are no distinct/measurable units that must be accounted for. Just include the percent sign.

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