When an aqueous solution at room temperature is analyzed, the [H+] is found to be 2.0 × 10−3 M. What is the [OH−]?
5.0 × 10−12 M
2.0 × 10−11 M
4.0 × 10−6 M
5.0 × 10−11 M
5.0 × 10−12 M
2.0 × 10−11 M
4.0 × 10−6 M
5.0 × 10−11 M