Calculate either [H3O+]or [OH]for each of the solutions. Solution A: [OH]=2.37107M;[H3O+]= Solution B: [H3O+]=7.97109M;[OH]= Solution C: [H3O+]=7.11104M;[OH]= Which of these solutions are basic at 25C ? Solution A: [OH]=2.37107M Solution B: [H3O+]=7.97109M Solution C:[H3O+]=7.11104M