4.2 The Gibbs phase rule gives, F, the number of degrees of freedom or the number of intensive variables (such as pressu
Posted: Mon May 16, 2022 9:39 pm
4.2 The Gibbs phase rule gives, F, the number of degrees of
freedom or the number of intensive variables (such as pressure,
temperature, or mole fraction) that can be independently changed
without disturbing the system’s equilibrium state. Use the phase
rule to:
(a) Show that four phases of a single substance cannot be
simultaneously in equilibrium. (3)
(b) Determine the number of degree of freedom, F for:
(i) a single gaseous phases prepared by separately adding CO2,
CO, and O2 where no catalyst is present to allow the system to
equilibrate. (3)
(ii) The system of (i) prepared by only adding CO2. (3)
(iii) The system of (i) with a catalyst present to establish
reaction equilibrium (catalyst does not count towards one of the
components
freedom or the number of intensive variables (such as pressure,
temperature, or mole fraction) that can be independently changed
without disturbing the system’s equilibrium state. Use the phase
rule to:
(a) Show that four phases of a single substance cannot be
simultaneously in equilibrium. (3)
(b) Determine the number of degree of freedom, F for:
(i) a single gaseous phases prepared by separately adding CO2,
CO, and O2 where no catalyst is present to allow the system to
equilibrate. (3)
(ii) The system of (i) prepared by only adding CO2. (3)
(iii) The system of (i) with a catalyst present to establish
reaction equilibrium (catalyst does not count towards one of the
components