Question

A bottle with a total volume of 1 L was filled halfway with a solution of 1,1,1- trichloroethane (initial concentration: 100 mg/L) and closed. Calculate the equilibrium concentrations of 1,1,1-trichloroethane at 20 °C in the gas and aqueous phase using H=0.078 mol/(L bar) and R= 0.081345 (bar L)/(mol K). Chlorofluorocarbon (CFC) βw=Kc βg = 1.9 ∙34.48 mg L β =65.51 mg/L

Answer 1

$C=kP_{gas}$

Where

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

$k$ is Henry's law constant ( often in units of M/atm)

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