1
$\begingroup$

enter image description here

Tris pKA = 8, therefore at pH = 8, the volume is 4.5mL. However the equivalence point simply can't be at 9mL, looking at this graph. It should be between approximately 9.5 and 10.5, no?

$\endgroup$
5
  • $\begingroup$ You were titrating diluted tris? $\endgroup$
    – Mithoron
    Nov 4, 2017 at 18:37
  • $\begingroup$ Yes, 100mL of 0.1M tris. $\endgroup$ Nov 4, 2017 at 18:40
  • $\begingroup$ It's rather weak base and conc. was low so this equiv. point simple is only slightly visible. $\endgroup$
    – Mithoron
    Nov 4, 2017 at 18:46
  • $\begingroup$ But how do I determine the actual value? $\endgroup$ Nov 4, 2017 at 18:47
  • $\begingroup$ chemistry.stackexchange.com/questions/28054/… $\endgroup$
    – Mithoron
    Nov 4, 2017 at 18:56

0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.