10. K
w
is not constant with respect to temperature, but rather decreases as the temperature of the water decreases. At 10
o
C,
K
w
= 3.0 x
10
-15
. What is the pH of pure water at 10
o
C?
Given
K
w
= [ H
+
]
2
,
what is the pH?
a) pH = 7.00
b) pH = 14.52
c) pH = 14.82
d) pH = 7.26
