A buffer solution can be prepared by starting with a weak acid, HA, and converting some of the weak acid to its salt (for example, NaA) by titration with a strong base The fraction of the original acid that is converted to the salt is designated (a) Derive an equation similar to equation (17 7) but expressed in terms of rather than concentrations (b) What is the pH at the point in the titration of phenol, C 6 H 5 OH, at which 0 27 (pK a of phenol 10 00) Eq 17 7 conjugate base acid pH pka log (17 7)

Question: A buffer solution can be prepared by starting with a weak acid, HA, and converting some of the weak acid to its salt (for example,

A buffer solution can be prepared by starting with a weak acid, HA, and converting some of the weak acid to its salt (for example, NaA) by titration with a strong base. The fraction of the original acid that is converted to the salt is designated ƒ.

(a) Derive an equation similar to equation (17.7) but expressed in terms of rather than concentrations.

(b) What is the pH at the point in the titration of phenol, C₆H₅OH, at which ƒ = 0.27 (pK_a of phenol = 10.00)?

Eq. 17.7

[conjugate base] [acid] pH = pka + log- (17.7)

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