Liquid part

Liquid part With mass conservation of the liquid, the volume of liquid is still given by:

The mass of liquid and the dissolved air/gas within the liquid is:

Equation 15: Case 2: mass of liquid at P and T

Finally, this gives for the fluid:

Equation 16: Case 2: fluid density at P and T

Which we can be written as

where:

The bulk modulus can be computed from Equation 2. Setting the denominator to D and since N is constant, we have:

We have:

which can be written as

It follows that

Or

Equation 17: Case 2: fluid bulk modulus at P and T