A buffered solution containing dissolved aniline,
C_(6)H_(5)NH_(2)
, and aniline hydrochloride,
C_(6)H_(5)NH_(3)Cl
, has a pH of 5.27 .
Determine the concentration of
C_(6)H_(5)NH_(3)^( )
in the solution if the concentration of
C_(6)H_(5)NH_(2)
is 0.275 M . The
pK_(b)
of aniline is 9.13.
Calculate the change in pH of the solution,
\Delta pH
, if 0.386 g NaOH is added to the buffer for a final volume of 1.35 L . Assume that any contribution of NaOH to the volume is negligible.
\Delta pH=
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