$\"\"$

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Acid dissociation constant for the acid HF is $\"\"$ .

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Where

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$\"\"$ is the concentration of $\"\"$ ions.

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$\"\"$ is the concentration of $\"\"$ ions.

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$\"\"$ is concentration of acid solution.

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$\"\"$

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a.

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Acid dissociation constant for the acid HF is $\"\"$ .

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Apply quotient property of logarithm : $\"\"$ .

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$\"\"$

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Apply product property of logarithm : $\"\"$ .

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$\"\"$ .

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$\"\"$

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b.

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Find value of $\"\"$ .

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concentration of $\"\"$ is $\"\"$ moles per litre.

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concentration of $\"\"$ is $\"\"$ moles per litre.

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concentration of $\"\"$ is $\"\"$ moles per litre.

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Substitute $\"\"$ , $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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Apply power property of logarithm : $\"\"$ .

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$\"\"$

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Apply property of logarithm is : $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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c.

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Find Acid dissociation constant $\"\"$ .

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$\"\"$ .

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$\"\"$ and $\"\"$ in $\"\"$

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$\"\"$

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Apply the definition of logarithm is : $\"\"$ if and only if $\"\"$ .

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$\"\"$ .

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$\"\"$

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d.

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Find $\"\"$ .

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Aldehydes $\"\"$ .

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$\"\"$ .

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$\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$

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Apply the definition of logarithm is : $\"\"$ if and only if $\"\"$ .

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$\"\"$ .

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$\"\"$

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a. $\"\"$ .

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b. $\"\"$ .

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c. $\"\"$ .

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d. $\"\"$ .