Question

What is the [OH-] in a solution that has a [H+] = 4.51 x 10^-6M?

Answer 1

Answer:

2.22×10⁻⁹ M

Explanation:

Applying,

[OH⁻][H⁺] = 1×10⁻¹⁴................... Equation 1

Where [OH⁻] = Hydroxyl ion concentration, [H⁺] = Hydrogen ion concentration.

make [OH⁻] the subject of the equation,

[OH⁻] =  1×10⁻¹⁴/[H⁺]............... Equation 2

From the question,

Given: [H⁺] = 4.51×10⁻⁶ M

Substitute into equation 2

[OH⁻] = 1×10⁻¹⁴/4.51×10⁻⁶

[OH⁻] = 2.22×10⁻⁹ M