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The pKb values for the dibasic base B are: pKb1= 2.10 pKb2= 7.70 Calculate the pH at each...

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Chemistry

The pKb values for the dibasic base B are:
pKb1= 2.10
pKb2= 7.70
Calculate the pH at each of the following points in the titrationof 50.0 mL of a 0.75 M B(aq) with a 0.75 M HCl(aq).
a. before addition of any HCl
b. after addition of 25.0 mL of HCl
c. after addition of 50.0 mL of HCl
d. after addition of 75.0 mL of HCl
e. after addition of 100.0 mL of HCl

please show your work as I really do want tounderstand the process. thank you so much :)

Answer & Explanation Solved by verified expert
3.8 Ratings (678 Votes)
pKb1 210 Kb1 10pKb1 794 x 103 pKb2 770 B molarity 075 M a before addition of any HCl B H2O BH OH 075 0 0 initial 075 x x x equilibrium Kb1 BHOHB 794 x 103 x2 075 x x2 794 x    See Answer
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