Use the HendersonSolution molar mass of C5H5N79 molar mass o

Use the Henderson

Solution

molar mass of C5H5N=79

molar mass of C5H5NHCl=115.5

so,

pOH=pKb+log(salt/base)

=8.769+log((0.96/115.5)*(79/0.6))

=8.808

so pH=14-8.808

=5.192