Question

The unit of Henry’s Law constant is ______.

Options

• mol L⁻¹ bar⁻¹

• mol⁻¹ L bar⁻¹

• mol L⁻¹ bar

• mol⁻¹ L⁻¹ bar⁻¹

Answer 1

The unit of Henry’s Law constant is mol L⁻¹ bar⁻¹.

Explanation:

Henry’s law is:

S = K_HP

So,

K_H = `S/P`

With S in mol L⁻¹ (concentration) and P in bar (pressure), K_H has units mol L⁻¹ bar⁻¹.