Question

If the [H+] in a solution is 1.0 x 10-7M, what is the [OH-] of this solution?

A. Higher than [H+]
B.lower than [H+]
C.same as [H+]

Answer 1

C.same as [H+]

Step-by-step explanation:

Autoionization of water is expressed as H+ * OH- = Kc

The value of Kc is 1*10^-14. Now simply plug thus in and the value of given H+ to solve

(1*10^-7) * OH- = 1*10^-14

OH- = 1*10^-7

Thus, in this scenario, the H+ and OH- ions have same concentration and solution is said to be neutral.