How Do You Calculate Concentrations Without the Ka Value?

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To calculate the concentration of all species in a 0.240 M C6H5NH3Cl solution, it's essential to identify the reaction involved. The solution contains aniline hydrochloride, a salt formed from a weak base and a strong acid, requiring either the Kb of aniline or the Ka of protonated aniline for calculations. The absence of the Ka value prompts users to research it independently, emphasizing the importance of understanding conjugate acid-base relationships. Tools like pH calculators and buffer makers can assist in these calculations. Understanding these concepts is crucial for accurate concentration determination.
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question states: Calculate the concentration of all species in a 0.240 M C6H5NH3Cl solution.

first of all how do i know what the reaction is? secondly to i need to know the Ka value for the dIssaciation for this - why isn't it given?
 
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Aniline hydrochloride - salt of a weak base and a strong acid. You will need Kb of aniline or Ka of protonated aniline (hint: these are conjugated acid and base, so if you know one, you can calculate the other).

Most likely Ka was not given to force you to look it up.


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