18 Questions
What equation is associated with the slope of OA?
Clausius-Clapeyron Equation
Why is the slope of the freezing point curve negative?
Because the volume of ice is greater than that of water
What is the degree of freedom at the triple point of water?
Zero
What does the Clausius-Clapeyron equation describe?
The relationship between pressure and temperature during phase transition
How many phases of sulphur can coexist at equilibrium?
Three
What is the term for ∆H in the Clausius-Clapeyron equation?
Enthalpy change
What is the reason sulphur cannot coexist with all four phases at equilibrium?
Because the degree of freedom of the system is negative
How many possible combinations of three phases of sulphur can coexist at equilibrium?
Four
What is the significance of the slope of a vapour pressure curve?
It indicates the change in enthalpy and volume
What is the condition for the coexistence of different phases in a system?
Equality of chemical potential
What is the purpose of a phase diagram?
To understand the effect of temperature, pressure, and composition on phase transitions
What determines the sign of the slope of a vapour pressure curve?
The ratio of enthalpy change to volume change
What is the total number of restrictions imposed by the mole fraction condition?
P
What is the total number of restrictions imposed by the chemical equilibrium condition?
C(P-1)
What is the relationship between the number of phases (P) and the number of components (C) in a system according to the Gibbs phase rule?
F = C - P + 2
What is the equation that relates the free energy of two phases in equilibrium at constant temperature?
G1 = G2
What is the total number of variables in a system with P phases and C components?
PC + 2
What is the total number of restrictions imposed by the equilibrium conditions in a system with P phases and C components?
P + P(C-1)
Understand the relationship between pressure and temperature changes in a system at equilibrium. Learn how to derive the Clausius-Clapeyron equation and its significance in thermodynamics.
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