Finding theoretical yield

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Tatiana 4B
Posts: 30
Joined: Fri Sep 28, 2018 12:28 am

Finding theoretical yield

Postby Tatiana 4B » Wed Oct 03, 2018 2:53 pm

When finding the theoretical yield, does the molar ratio of reactant to product always include the limiting reactant for any one product?

Tony Ong 3K
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

Re: Finding theoretical yield

Postby Tony Ong 3K » Wed Oct 03, 2018 3:01 pm

If I understood your question correctly, then in order to figure out the theoretical yield of a specific product, you would have to use the moles of the limiting reagent and multiply by the molar ratio of the product to the limiting reagent given in the chemical equation to find the maximum moles of product. And then for theoretical yield, you just use molar mass to find the maximum moles of product in grams!

Alexa_Henrie_1I
Posts: 61
Joined: Fri Sep 29, 2017 7:03 am

Re: Finding theoretical yield

Postby Alexa_Henrie_1I » Wed Oct 03, 2018 3:13 pm

You only need to know the molar ratio between the limiting reactant and products because the limiting reactant is completely used in the chemical reaction.

katie_sutton1B
Posts: 61
Joined: Fri Sep 28, 2018 12:17 am

Re: Finding theoretical yield

Postby katie_sutton1B » Wed Oct 03, 2018 3:42 pm

To add on, does this mean that the molar ration of one reactant to another is useless information in finding theoretical yield?

Ava Kjos 1D
Posts: 65
Joined: Fri Sep 28, 2018 12:19 am

Re: Finding theoretical yield

Postby Ava Kjos 1D » Wed Oct 03, 2018 4:19 pm

The molar ratio between the two reactants is essential for determining the limiting reactant. However, once you find the limiting reactant you do not need to use the molar ratio between the reactants to determine the theoretical yield. You will be using the molar ratio between the limiting reactant and the product to determine how many moles of the product will be formed.

Emily Ng_4C
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

Re: Finding theoretical yield

Postby Emily Ng_4C » Wed Oct 03, 2018 6:34 pm

The amount of product the limiting reactant produces will be the actual yield because you can't produce more if there is not enough of one of the parts.

Quinn_Simpson_3D
Posts: 12
Joined: Fri Sep 28, 2018 12:26 am

Re: Finding theoretical yield

Postby Quinn_Simpson_3D » Wed Oct 03, 2018 10:20 pm

You have to know the molar ratio between both reactants in order to find which one is the limiting reagent. Once you find the moles of each product, you have to use the molar ratios when calculating the amount of product for each given mole. Once you have the mass of both products, you can see which one is less and is therefore the limiting reagent.


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