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Consider the acid dissociation behavior of carbonic acid, H 2 CO 3 . A p H gradient from 0 to 14 is given. Below a p H equal to p K a 1 which is 6.351, the predominant form is H 2 C O 3. Above a p H equal to p K a 2 which is 10.329, the predominant form is C O 3 2 minus. Between the two p K a values, the predominant form is H C O 3 minus. What is the predominant species present at pH 6.73 ?

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okpalawalter8

Complete Question

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Answer:

The predominate specie is [tex]HCO_3^-[/tex]

Explanation:

From the question we can see that [tex]pk_{a1}(6.351) < pH(6.73) pk_{a2}(10.329)[/tex]

Hence looking at the question we can see that the predominant specie is [tex]HCO_3^-[/tex]  

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