Answer
a. 5.64
b. 11.68
c. 2.41
d. 9.04
Work Step by Step
a. $-log(4.35\times10^{-9})=8.36$
$14-8.36=5.64$
b. $-log(7.3\times10^{-3})=2.14$
$14-2.14=11.86$
c. $-log(2.6\times10^{-12})=11.59$
$14-11.59=2.41$
d. $-log(1.1\times10^{-5})=4.96$
$14-4.96=9.04$