CHE 211: Thermodynamics Chapter 1

CHE 211: Thermodynamics Chapter 1 Mixture - Answer- the existence of two or more species under the same conditions boiling temperature - Answer- temperature that a pure species boils at a constant pressure normal boiling point (T_b) - Answer- the temperature that a pure species boils at a constant pressure of 1 bar saturation pressure P^sat - Answer- the pressure at which a pure species boils at a given temperature, the rate of evaporation equals the rate of condensation vapor pressure - Answer- each species' contribution to the total pressure in a mixture at a given temperature. This contribution is equal to the partial pressure of the species in an ideal gas mixture. subcooled liquid - Answer- a phase where pressure and temperature are independent properties; a liquid at a temperature less than the boiling temperature for a constant pressure. saturated liquid - Answer- a liquid at the saturation temperature and pressure. May be indicated by a subscript l saturated vapor - Answer- a gas at the saturation temperature and pressure. May be indicated by a subscript v. superheated vapor - Answer- a gas at a T greater than the boiling T at a given P Impermeable boundary - Answer- mass cannot pass through adiabatic boundary - Answer- heat cannot pass through rigid boundary - Answer- volume is constant closed system - Answer- constant mass open system - Answer- mass flows in/out (may or may not be constant mass) adiabatic system - Answer- has an adiabatic boundary, may or may not have constant energy