pKa and acidity

Acidity
Basicity
The Conjugate Seesaw

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Cecilia Lei 3K
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Joined: Fri Sep 24, 2021 5:12 am

pKa and acidity

Postby Cecilia Lei 3K » Sun Nov 28, 2021 11:31 pm

How to determine pKa and acidity?
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905783577
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Joined: Fri Sep 24, 2021 7:34 am

Re: pKa and acidity

Postby 905783577 » Sun Nov 28, 2021 11:40 pm

pKa is the negative log of Ka, which is the equilibrium constant found by dividing the concentration of the products by the concentration of the reactants.
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Anish_Marripati_2F
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Re: pKa and acidity

Postby Anish_Marripati_2F » Mon Nov 29, 2021 1:04 am

pKa is -log(ka). The lower the pka the higher the acidity.
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Edmond Chu 1C
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Re: pKa and acidity

Postby Edmond Chu 1C » Mon Nov 29, 2021 1:48 am

You determine pKa by first finding Ka. To find Ka, you divide the concentration of products by the concentration of reactants. After you do this, take the -log(Ka) in order to find pKa. The lower the pKa, the higher the acidity.
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Cory Poon 3G
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Re: pKa and acidity

Postby Cory Poon 3G » Mon Nov 29, 2021 4:53 pm

We know that pKa is the negative log of Ka, and whenever we have a lower pKa, the acidity is higher!
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Aashna Bhandari 1L
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Re: pKa and acidity

Postby Aashna Bhandari 1L » Mon Nov 29, 2021 5:06 pm

pKa is the negative log of the Ka of the acid. The relationship between pKa and acidity is the lower the pKa, the higher the acidity.
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