The ph of a solution for which [OH] = 1.0 x 10^-4 is?

A 10

B 14

C 11

D 9

E 7

To find pH, use the following formula - - - > pH = - log [H+]

so first we need to calculate the [H+] concentration using the OH concentration. to do this, we need to use this formula--> 1.0x10-14 = [H+] X [OH-], so we solve for H + and plug in

[H+] = 1.0X10-14/[OH-]---> 1.0 x 10-14 / 1.0 x 10-4 = 1.0 x 10-10

now that we have the H + concentration, we can solve of pH

pH = - log (1.0x10-10) = 10

answer is A