At 25∘C, the Henry's law constant for O2 is 1.3×10−3 M/atm. What pressure of oxygen is needed to maintain a O2 concentration of 0.48 M?

Question

At 25∘C, the Henry's law constant for O2 is 1.3×10−3 M/atm. What pressure of oxygen is needed to maintain a O2 concentration of 0.48 M?

Lauren H. · Accepted Answer

The mathematical expression for Henry’s law is given by

$K_{H}=\frac{P_{1}}{C_{w}}$

Where,

C is the solubility of the gas at a fixed temperature in a solvent (units in M or ml gas/L).

$K_{H}$ is the Henry’s law constant (units in M/atm)

$P_{gas}$ is the partial pressure of the gas (units in Atm)

Plug in your values and solve.

At 25∘C, the Henry's law constant for O2 is 1.3×10−3Matm. What pressure of oxygen is needed to maintain a O2 concentration of 0.48 M?