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QUESTION

Chem

2. The pKb values for the dibasic base B are pKb1=2.10 and PKb2=7.79. Calculate the pH at each of the following points in the titration of 50 ml of a 0.65 M B with 0.65 M HCl

a) before addition of any HCl

b) after addition of 25 ml of HCl

c) after addition of 50 ml of HCl

d) after addition of 75 ml of HCl

e) after addition of 100 ml of HCl

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*** pKb ****** for the ******* **** B *** ******** *** PKb2=779 ********* *** ** ** **** ** the following ****** ** the ********* of ** ml ** a 065 * * **** *** * ***** ****** addition ** *** ***

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