The Henry's law coefficient of 2-nitrophenol over the temperature range 278-303 K.
Although 2-nitrophenol has been identified as an important environmental chemical there is scarcity in the literature regarding the temperature dependence of its Henry's law coefficient, H. Here a bubble purge method was used to measure H for 2-nitrophenol over the temperature range 278-303 K. A novel approach in the data treatment allowed correction of the data for non-equilibrium partitioning in the apparatus to obtain the true equilibrium H value. The experimentally derived temperature-dependent expression for H of 2-nitrophenol is lnH (M atm(-1)) = (6290/T (K)) - 16.6. The standard enthalpy and entropy of gas-to-liquid transfer for 2-nitrophenol in aqueous solution are -52.3 +/- 8.1 kJ mol(-1) and -138 +/- 28 J mol(-1) K(-1), respectively. (Errors are 95% confidence intervals.)
Müller
B
B
Department of Chemistry, University of Edinburgh, UK.
Heal
M R
MR
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004785:Environmental Pollutants; D005740:Gases; D007700:Kinetics; D008956:Models, Chemical; D009596:Nitrophenols / Q000737:chemistry*; D013696:Temperature
D004785:Environmental Pollutants; D005740:Gases; D009596:Nitrophenols; C045573:2-nitrophenol