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Chemistry
Chemistry
Problem
Which expression correctly relates the pH of a solution that contains a weak acid HA and its conjugate base A⁻ at equilibrium? a)
p
O
H
=
p
K
a
+
log
[
A
−
]
[
H
A
]
pOH = pK_a + \log\dfrac{[A^-]}{[HA]}
pO
H
=
p
K
a
+
lo
g
[
H
A
]
[
A
−
]
b)
p
H
=
p
K
a
+
log
[
A
−
]
[
H
A
]
pH = pK_a + \log\dfrac{[A^-]}{[HA]}
p
H
=
p
K
a
+
lo
g
[
H
A
]
[
A
−
]
c)
p
H
=
p
K
a
−
log
[
A
−
]
[
H
A
]
pH = pK_a - \log\dfrac{[A^-]}{[HA]}
p
H
=
p
K
a
−
lo
g
[
H
A
]
[
A
−
]
d)
p
H
=
p
K
a
+
[
A
−
]
[
H
A
]
pH = pK_a + \dfrac{[A^-]}{[HA]}
p
H
=
p
K
a
+
[
H
A
]
[
A
−
]
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