Question

(08.05 M)

A solution has a [H30) of 1 x 10-3 M. What is the [OH-] of the solution?
11M
14 M
1x 10-14 M
1* 10-11M

Answer 1

The [OH⁻] of the solution : 1 x 10⁻¹¹ M

Further explanation

Given

[H30) : 1 x 10-3 M.

Required

the [OH]

Solution

The water equilibrium constant is a product of the concentrations of [H3O +] and [OH-]

Kw = [H₃O⁺] [OH⁻]

Input the value of [H₃O⁺]

1 x 10⁻¹⁴ = 1 x 10⁻³ x [OH⁻]

[OH⁻] = 1 x 10⁻¹⁴ : 1 x 10⁻³

[OH⁻] = 1 x 10⁻¹¹ M