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How does pH control the forms of carbonic acid, bicarbonate, and carbonate in water and the...

How does pH control the forms of carbonic acid, bicarbonate, and carbonate in water and the chemical conditions when they are equal?
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Answer #1

The pKa1 value for carbonic acid is 6.35. The variatio of carbonic acid, bicarbonate and carbonate with pH is as given below.

When pH<<<pKa1, then [H2CO3] approximately equal to1.

When pH=pKa1, then H2CO3 and HCO3- co exist.

When 7<pH<10, HCO3- is present.

When pH>10 CO3- is present.

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