Theoretical vs Actual Yield

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404536963
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Joined: Fri Feb 02, 2018 3:02 am

Theoretical vs Actual Yield

Postby 404536963 » Sun Oct 07, 2018 10:38 pm

Why is theoretical yield greater than actual yield in chemical reactions?

104904344
Posts: 27
Joined: Fri Sep 28, 2018 12:27 am

Re: Theoretical vs Actual Yield

Postby 104904344 » Sun Oct 07, 2018 10:39 pm

Theoretical yield is the maximum yield. Actual yields are less than theoretical yields because of side reactions, impurities, etc.

Chloe Likwong 2K
Posts: 70
Joined: Fri Sep 28, 2018 12:23 am

Re: Theoretical vs Actual Yield

Postby Chloe Likwong 2K » Mon Oct 08, 2018 7:27 pm

To add on the first reply, if the Percent Yield > 100%, the reason would be is that the product is not pure.

Rachel Dang 1H
Posts: 32
Joined: Fri Sep 28, 2018 12:17 am

Re: Theoretical vs Actual Yield

Postby Rachel Dang 1H » Mon Oct 08, 2018 8:27 pm

Theoretical yield is the value you get if your reaction were to react to completion in an ideal world. However during experimentation there are a lot of things that can go wrong like residue on glassware, or side reactions that either take away from your original reaction or result in an impure product due to a byproduct. So you are unlikely to have an actual yield that is exactly the same as your theoretical yield in the real world.

daniella_knight1I
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Joined: Fri Sep 28, 2018 12:18 am

Re: Theoretical vs Actual Yield

Postby daniella_knight1I » Tue Oct 09, 2018 10:05 am

Theoretical yields will always be greater because it is the best possible outcome in a chemical reaction where nothing went wrong and both substances produced to their full potential. In reality, this never happens so there will always be an incongruence with the actual yield because some substance could've gotten stuck to the beaker or evaporated away so you'll never produce 100% of what you wanted in the beginning.

AlyssaBei_1F
Posts: 99
Joined: Fri Sep 28, 2018 12:17 am

Re: Theoretical vs Actual Yield

Postby AlyssaBei_1F » Tue Oct 09, 2018 3:10 pm

The theoretical yield is always bigger because due to side reactions, impurities, etc. the actual yield will be less.


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