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Ostwald Dilution Law Mathematical Interpretation

What is the i...

Question

What is the ionization constant of an acid if the hydronium ion concentration of a $0.40 M$ solution is $1.40 \times 10^{- 4} M$ ?

1.96 \times 10^{- 8}

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1.22 \times 10^{- 9}

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4.90 \times 10^{- 8}

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1.40 \times 10^{- 6}

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Solution

The correct option is C $4.90 \times 10^{- 8}$

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{C u}^{2 +} (a q .) + 2 H_{2} O (I) ⇌ C u {(H O)}^{+} (a q .) + H_{3} O^{+} (a q .)

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