calculate the Henry's law proportionality constant for N2?

partial pressure at 1 atm=0.78 atm
solubility at 1 atm= 5.3 x 10^-3 mol/L

To calculate Henry's law proportionality constant (also known as Henry's law constant) for a given gas, you need to know the partial pressure of the gas and its solubility at that pressure. Henry's law is given by the equation:

C = k * P

Where:
C is the solubility of the gas in mol/L,
k is the Henry's law constant, and
P is the partial pressure of the gas in atm.

To calculate the Henry's law constant for nitrogen gas (N2), you have the partial pressure (P = 0.78 atm) and the solubility (C = 5.3 x 10^-3 mol/L) at that pressure.

Rearranging the equation, we get:

k = C / P

Plugging in the given values, we have:

k = (5.3 x 10^-3 mol/L) / (0.78 atm)

k ≈ 6.79 x 10^-3 mol/(L*atm)

So, the Henry's law proportionality constant (Henry's law constant) for N2 in this case is approximately 6.79 x 10^-3 mol/(L*atm).