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Chemistry
Chemistry
Problem
A 25.0 mL sample of 0.150 M aniline (
C
6
H
5
N
H
2
\mathrm{C_6H_5NH_2}
C
6
H
5
N
H
2
,
K
b
=
4.3
×
10
−
10
K_b = 4.3\times10^{-10}
K
b
=
4.3
×
1
0
−
10
) is titrated with 0.300 M
H
C
l
\mathrm{HCl}
HCl
. After exactly 10.0 mL of the acid has been added, what is the pH of the mixture at 25 °C? a) 9.97 b) 4.03 c) 5.24 d) 2.86
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