View Insert Format Tools Table Window Help 07.Determ Ka_Submission [... Q Search

Question

View Insert Format Tools Table Window Help 07.Determ Ka_Submission [... Q Search in Document Insert Design Layout References Mailings ReviewView 3. What can be stated about the concentrations of the acid-base conjugate pairs at the half equivalence point? Show how this leads to the relationship pH-pka at the half-equivalence point. +125 ge 2 of 2 210 words * Rating 91%-55 votes mune sys point in the titration of a weak base with a stron What is the pH at the ha pkb of the weak base is 7.95. Solved: If The PH At The Half Equivalence Point For A Titr... Ch www.chegg.com> study science > chemistry chemistry questions and answers * Rating: 100%-1 vote

Explanation / Answer

At half equivalence point

Concentration of acid = Concentration of conjucate base

[HA] = [A-]

Henderson - Hasselbalch equation is

pH = pKa + log([A-] /[HA])

when, [A-] = [HA]

log([A-] /[HA)] = log(1) = 0

Therfore,

pH = pka

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