The value of in a solution is 6.2 X10 -7 M. Calculate the value of [H 3 O + ] and label the solution as acidic or basic . Posted on June 24, 2021 | by wp The value of [] in a solution is 6.2 X10-7M. Calculate the value of [H3O+] and label the solution as acidic or basic. [H3O+] =