Intermolecular Forces
This type of intermolecular force is present in all molecules and atoms.
What is dispersion?
This environmental factor affects the likelihood of an organic compound to stay in the hydrosphere as it moves towards the North and South poles.
What is temperature?
The value of the fragment coefficient for any aliphatic, olefinic, or aromatic carbon.
What is positive?
This thermodynamic quantity represents the amount of heat required to convert a solid into a liquid.
What is the enthalpy of fusion?
This is the reason why larger molecules may not readily dissolve in water even with stronger intermolecular forces.
What is the energy required to form a larger cavity in water?
This factor dominates the partitioning behaviour of compounds that have limited solubility in both water and octanol.
What is volatility or vapor pressure?
This effect of ortho-substitutions in aromatic systems leads to a positive correction factor in a molecule's log Kow estimation.
What is a decrease in hydrogen bonding capability?
What are the three key factors that influence a compound's dissolution in water?
What are molecular volume, phase at room temperature, and intermolecular forces?
This type of intermolecular interaction is hindered when substituents block the interaction of benzene ring pi-bonds with water.
What are dipole-induced dipole interactions?
This key partitioning coefficient is crucial for understanding the behavior of chemicals in wastewater treatment plants,
What is the soil-water partitioning coeffiicent (Kd)?
This feature of aliphatic carbons reduces coefficients due to lessened "costs" for cavity formation.
What is increased branching?
This threshold value impacts hydrogen bonding and ion-dipole interactions, altering an organic compound's solubility in water.
What is the pKa?
This functional group can result in a compound being solid at room temperature, but highly water-soluble.
What is the hydroxyl group (OH)?
When a pollutant's concentration in an organism exceeds its concentration in the ambient environment due to uptake, it exhibits this behaviour.
What is bioaccumulation?
This pi-electron property results in smaller fragment coefficients for olefinic and aromatic carbons than aliphatic ones.
What is high polarizability?
This trend is observed in n-alkanes as the number of carbon atoms increases, leading to a decrease in vapor pressure.
What is the result of greater dispersion/van der Waals forces?
What process during the dissolution of a compound in water leads to a negative entropy change?
What is hydrophobic effect ("water cage" effect)?
This process describes the interaction of chemicals with surface moieties, influencing their partitioning to soil.
What is sorption?
This effect results in al-O-ar having a more positive fragment coefficient than al-O-al.
What is delocalization of non-bonding electrons?
The slope of the relationship between bioconcentration factor (BCF) and octanol-water partition coefficient (Kow) is not one because of this process.
What is metabolism?