Carbonic acid (H2CO3), a diprotic acid has Ka1=4.0×10−7 and Ka2=5.0×10−11. What is the [CO32−] of a 0.025 M solution of carbonic acid?

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Carbonic acid {({H}_{{{2}}}{C}{O}_{{{3}}})}, a diprotic acid h

Question

Carbonic acid $(H_{2} C O_{3}),$ a diprotic acid has $K_{a 1} = 4.0 \times 10^{- 7}$ and $K_{a 2} = 5.0 \times 10^{- 11} .$ What is the $[C O_{3}^{2 -}]$ of a 0.025 M solution of carbonic acid?

5.5 \times 10^{- 9}

5.5 \times 10^{- 8}

7.0 \times 10^{- 9}

7.0 \times 10^{- 11}

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Alexander Discussed

Carbonic acid

(H_{2} C O_{3}),

a diprotic acid has

K_{a 1} = 4.0 \times 10^{- 7}

and

K_{a 2} = 5.0 \times 10^{- 11} .

What is the

[C O_{3}^{2 -}]

of a 0.025 M solution of carbonic acid?

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Question Text	Carbonic acid $(H_{2} C O_{3}),$ a diprotic acid has $K_{a 1} = 4.0 \times 10^{- 7}$ and $K_{a 2} = 5.0 \times 10^{- 11} .$ What is the $[C O_{3}^{2 -}]$ of a 0.025 M solution of carbonic acid?
Answer Type	Text solution:1
Upvotes	151