Chapter Two.pdf - Rowan Naga Chemistry Revision Chapter Two...

This preview shows page 1 - 3 out of 5 pages.

Rowan Naga Chemistry Revision 1 | P a g e Chapter Two: Liquid State Clapeyron Equation: = Rate by which V.P. changes with temp. V= V i - V f L= Latent heat of evaporation for transformation of (1) mole of liquid to vapor. (Enthalpy) Derivation of equation: (copied) Use this equation when solving:
Rowan Naga Chemistry Revision 2 | P a g e Properties of Liquid: 1) Evaporation: ( Endothermic) ( from liquid to vapor) Conditions needed: 1. KE in excess than the average volume. 2. Must occupy a position of the liquid surface. Factors that increase evaporation rate: 1. Increased temperature. 2. Increased surface area of liquid. 3. Increased intermolecular attractions. Latent Heat of Evaporation: (Enthalpy) - Definition: The amount of energy in the form of heat required to evaporate (1) mole of liquid at constant temperature. - Water H evap. = +44 kj/mole 2) Condensation: ( Exothermic) ( from vapor to liquid ) H evap. + H cond. = 0 Vapor Pressure: Pressure that the vapor exerts when the liquid and vapor coexists in conditions of dynamic equilibrium.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture