Select the solution below that is the most basic. A)[OH^-] = 1.0 × 10^-4 M B)[OH^-] = 1.0 × 10^-5 M C)[OH^-] = 1.0 × 10^-7 M D)[OH^-] = 1.0 × 10^-9 M E)[OH^-] = 1.0 × 10^-11 M

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The concentration of hydroxide ions ([OH-]) indicates the basicity of a solution. The higher the concentration of OH- ions, the more basic the solution. Option A has the highest concentration of OH- ions (1.0 × 10^-4 M), making it the most basic solution listed.

Select the Solution Below That Is the Most Basic