Strong Acids

Acidity
Basicity
The Conjugate Seesaw

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Chantel_2I
Posts: 109
Joined: Sat Sep 07, 2019 12:19 am

Strong Acids

Postby Chantel_2I » Mon Dec 02, 2019 11:28 pm

Why can strong acids not have a Ka value?

Tai Metzger 3K
Posts: 103
Joined: Sat Aug 24, 2019 12:17 am

Re: Strong Acids

Postby Tai Metzger 3K » Mon Dec 02, 2019 11:33 pm

Ka = Products/Reactants and strong acids dissociate (almost) completely so the reactants would be equal to (almost) zero. Thus, the Ka of a strong acid would approach infinity and so strong acids cannot have a Ka.

905416023
Posts: 54
Joined: Thu Jul 25, 2019 12:17 am

Re: Strong Acids

Postby 905416023 » Mon Dec 02, 2019 11:38 pm

A Ka value is calculated by products being divided by reactants (products/reactants). Strong acids completely ionize in water, so there are no reactants left. This means the equation will be products/0. Any thing/0 is undefined. Therefore, strong acids can not have a Ka value.

Ashley Osorio
Posts: 54
Joined: Thu Jul 11, 2019 12:17 am

Re: Strong Acids

Postby Ashley Osorio » Tue Dec 03, 2019 12:15 am

So because they (typically) completely dissolve in water, they have no Ka value. Can only strong acids do this then? Have no Ka value?

Elizabeth Harty 1A
Posts: 125
Joined: Sat Jul 20, 2019 12:16 am

Re: Strong Acids

Postby Elizabeth Harty 1A » Tue Dec 03, 2019 8:26 am

Ashley Osorio wrote:So because they (typically) completely dissolve in water, they have no Ka value. Can only strong acids do this then? Have no Ka value?


Do you mean as opposed to bases?


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