Question

9 of 10 The pK, values for the dibasic base B are pKo 2.10 and pK2 7.57. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.70 M B(aq) with 0.70 M HCI(aq). (a) before addition of any HCI (b) after addition of 25.0 mL of HCI Number (c) after addition of 50.0 mL of HcI Number (d) after addition of 75.0 mL of HCIn Number (e) after addition of 100.0 ml of HCI 0

Answer 1

basic base milli mdes or baseニSDxo구 : 35 a). beone addition of PoH - = 1-12 b aste addttioo og as ml of Hel 과 ís half- ezuivience port-So c) Aften addition of-Sond or Hd 2- = 4.335 o2

d aften additton OF 구5 ml ok HCL IH is seand haleenivalonce point s Pott-구, 5구- aften addittorn ts segpn es-ásalence Point here it ts on BH2t emainS S0 2t 70 oo+50 0.4 0.5 X

2. 0 . 33-х 구. 2
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