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Characteristics of Equilibrium Constant

Which of the ...

Question

Which of the following concentration has the largest degree of dissociation for a weak acid?

1.0 M

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0.5 M

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0.10 M

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0.01 M

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Solution

The correct option is D $0.01 M$
For a weak acid,
$α = \sqrt{\frac{K_{a}}{C}}$
Hence, lower the concentration, higher the degree of dissociation for a weak acid

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