b) The substance with the stronger intermolecular force has the lower vapor pressure. These observations include non-ideal-gas thermodynamic behavior reflected by virial coefficients, vapor pressure, viscosity, superficial tension, and … What is the vapor pressure of ethylene glycol at its normal boiling point? The weaker the intermolecular forces in the liquid, the more easily molecules can escape and, therefore, the higher the vapor pressure at a given temperature.
The molecule with a high vapor pressure is the molecule with the weaker intermolecular forces. The easier the molecules evaporate the more volatile the liquid. A liquid’s vapor pressure is directly related to the intermolecular forces present between its molecules. The molecule with a high vapor pressure is the molecule with the weaker intermolecular forces. Evaporation vs Boiling Point - They BOTH represent liquids turning to gases but there is a distinct difference. The stronger these forces, the lower the rate of evaporation and the lower the vapor pressure. Vapor pressure and intermolecular forces (Maria M, Kristina P, Victor S and Alvaro P). Interpretation: The vapour pressure of the liquid depend on the intermolecular forces is to be explained. Vapor pressure (or vapour pressure in British English; see spelling differences) or equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system.The equilibrium vapor pressure is an indication of a liquid's evaporation rate. The vapor pressure of a liquid at a particular temperature depends on the strengths of the intermolecular forces.
GO FIGURE. Gluttony intermolecular forces and vapor pressure is a bad habit of people who are not Intermolecular Forces And Vapor Pressure determined. Which statement below regarding vapor pressure is NOT correct? The stronger intermolecular forces the less molecules will escape into the vapor phase giving a lower vapor pressure. Intermolecular forces are Van der Waals forces. c) Pure water has a higher vapor pressure at a given temperature than seawater.
If the intermolecular forces are large, then molecule in liquid phase are not able to leave to liquid easily, hence lowering the escaping tendency and therefore lower vapour pressure. There is no direct connection between the molar mass of a compound and its vapor pressure. Concept introduction: Vapour pressure: In a closed system, vapour pressure is the pressure produced by a vapour in thermodynamic equilibrium with its solid or liquid phase at a given temperature. and negligible or weak intermolecular forces. Which compound do you think is more volatile at 25 °C: CCl 4 or CBr 4? a) Vapor pressure is decreases with temperature. The investigation of intermolecular forces starts from macroscopic observations which indicate the existence and action of forces at a molecular level. Note: This is … GIVE IT SOME THOUGHT. As the intermolecular attraction increases, • The vapor pressure ( the pressure of the vapor that is in equilibrium with its liquid) decreases • The boiling point ( the temperature at which the vapor pressure becomes equal to the pressure exerted on the surface of the liquid) increases e) a Nonvolatile solute increases the vapor pressure of the solvent.