5% Rule

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Jessica Castellanos
Posts: 102
Joined: Sat Aug 24, 2019 12:17 am
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5% Rule

Postby Jessica Castellanos » Mon Jan 20, 2020 11:20 am

Does the 5% rule apply to both chemical equilibrium and acid-base equilibria? Thanks!

Kevin Antony 2B
Posts: 99
Joined: Sat Sep 07, 2019 12:16 am

Re: 5% Rule

Postby Kevin Antony 2B » Mon Jan 20, 2020 11:23 am

Yes it does. If we are to infer that x is a minimal value that does impact the equation we need to know that it is less than 5% in both scenarios.

Naji Sarsam 1F
Posts: 104
Joined: Sat Aug 17, 2019 12:18 am

Re: 5% Rule

Postby Naji Sarsam 1F » Mon Jan 20, 2020 12:35 pm

Yes. Moreover, it is important to understand that chemical equilibria and acid-base equilibria are the same exact process. We just have different terms for the Ks of each as acid-base reactions usually involve just proton disassociation. Thus, almost everything you would do for chemical equilibria also applies to acid-base equilibria.

TanveerDhaliwal3G
Posts: 105
Joined: Fri Aug 30, 2019 12:17 am

Re: 5% Rule

Postby TanveerDhaliwal3G » Mon Jan 20, 2020 1:05 pm

Yes the 5% rule does apply to both because they are essentially the same process.

AKatukota
Posts: 100
Joined: Thu Jul 25, 2019 12:18 am

Re: 5% Rule

Postby AKatukota » Mon Jan 20, 2020 1:29 pm

Is it that it is 5% of less than 5% OF the initial concentration?

105311039
Posts: 107
Joined: Fri Aug 02, 2019 12:16 am

Re: 5% Rule

Postby 105311039 » Mon Jan 20, 2020 1:50 pm

Yes, the 5% rule applies to both acid and base and chemical equilibria. They are essentially the same process.

Ashley Alvarado 2C
Posts: 45
Joined: Sat Aug 17, 2019 12:16 am

Re: 5% Rule

Postby Ashley Alvarado 2C » Mon Jan 20, 2020 10:29 pm

Yes, the 5% rule is used to get a valid approximation without having to use the quadratic formula when calculating for both acid base and chemical equilibria.


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