Answer:
C. In bases, [OH-] is greater than [H3O+]
Explanation:
For basic solutions [OH-] > [H3O+]
For acidic solutions [H3O+] > [OH-]
and for neutral solutions [H3O+] = [OH-]
A. In acids, [OH-] is greater than [H3O+] False is the opposite.
B. In bases, [OH-] = [H3O+] False this will occur in neutral solutions.
C. In bases, [OH-] is greater than [H3O+] True this is what makes a solution basic : the [OH-] > [H3O+].
D. In neutral solutions, [H3O+] = [H2O] False impossible
E. In bases, [OH-] is less than [H3O+] False in this case the solution is acidic.