Indicate whether the following are acidic, basic, or neutral solution

A. [H2O+]=6.0x10^-12

B. [H3O+]=1.4x10^-9

C. [OH-]=5.0x10^-12

D. {OH-]=3.5x10^-10

You answer this by using the pH formula and and the relation of pH and pOH, pH = - log[H+] and 14 = pH + pOH. The correct classification are as follows:

A. [H2O+]=6.0x10^-12

basic

B. [H3O+]=1.4x10^-9

basic

C. [OH-]=5.0x10^-12

acidic

D. {OH-]=3.5x10^-10

acidic

Hope this answers the question.