Sig Figs for pH

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Meghanhe1l
Posts: 60
Joined: Fri Sep 28, 2018 12:17 am

Sig Figs for pH

Postby Meghanhe1l » Wed Dec 05, 2018 11:36 pm

How do sig figs apply to pH calculations?
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skyeblee2F
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Sig Figs for pH

Postby skyeblee2F » Wed Dec 05, 2018 11:56 pm

For pH, one sig fig corresponds to one decimal place (ex: 1.5) and two sig figs correspond to two decimal places (ex: 1.53) and so on. On the test, we will likely use three sig figs as per usual so answers would look like something like 1.532
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Nicolette_Canlian_2L
Posts: 77
Joined: Fri Sep 28, 2018 12:25 am
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Re: Sig Figs for pH

Postby Nicolette_Canlian_2L » Thu Dec 06, 2018 12:18 am

Are the sig fig rules different when applied to pH, then?
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Henri_de_Guzman_3L
Posts: 88
Joined: Fri Sep 28, 2018 12:25 am

Re: Sig Figs for pH

Postby Henri_de_Guzman_3L » Fri Dec 07, 2018 1:30 am

They're different

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=60&t=38753&p=131013&sid=70e1f2e5be7591a4f070b01919368ec8&sid=70e1f2e5be7591a4f070b01919368ec8#p131013
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