Question

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

Answer 1

It's definitely A for plato :)