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The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 = 7.44....

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Chemistry

The pKb values for the dibasic base B are pKb1 = 2.10 and pKb2 =7.44. Calculate the pH at each of the following points in thetitration of 50.0 mL of a 0.80 M B(aq) with 0.80 M HCl(aq).

a)before any HCl is added

b)25ml HCl

c)50ml HCl

d)75ml HCl

e)100ml HCl

Answer & Explanation Solved by verified expert
4.2 Ratings (924 Votes)
Since the base B is dibasic it will need 2 equivalents of acidto completely neutralizeSince we have pKb1 210 and pKb2 744The pH corresponds to the first pKb1 210 Kb1 will be1021 79 x 103in water the base B givesB H2O BH OHAt equilibrium 79 x 103 x208xx 795 x 102 This is the    See Answer
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