“The Kb for an amine is 9.715×10−5. What percentage of the amine is protonated if the pH of a solution of the amine is 9.515?
Assume that all OH− came from the reaction of B with H2O.”
Hi! Can anybody give a full explanation so this question’s approach? Thank you!
Re: HW W2 #5
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Colin Wong 1C
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Re: HW W2 #5
Hello,
For this problem, you first want to calculate pOH with the given pH in the question. You will then calculate [OH] and [BH] from your calculated pOH. Then, you will plug into your Kb equation in order to solve for [B]. Lastly, in order to solve for percent protonated, you do [BH]/([B]+[BH].
For this problem, you first want to calculate pOH with the given pH in the question. You will then calculate [OH] and [BH] from your calculated pOH. Then, you will plug into your Kb equation in order to solve for [B]. Lastly, in order to solve for percent protonated, you do [BH]/([B]+[BH].
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