Practice 10 questions on CEM2005W - Physical Chemistry at University of Cape Town. Free AI-generated quiz on uNotes — track your score, retake anytime.
1According to the provided solutions, how is the enthalpy of fusion (ΔfusH) calculated using the enthalpies of sublimation (ΔsubH) and vaporization (ΔvapH)?
2Which equation is used to calculate the Gibbs free energy of mixing for a non-ideal solution using activity coefficients?
3In the context of the dichloromethane and n-pentane phase diagram, what does a minimum boiling point azeotrope indicate about molecular interactions?
4For a component acting as a solute in a real solution, which standard state is typically used to calculate activity (a)?
5What is the formula for the lever rule used to determine the ratio of moles in the liquid phase (nl) to the vapor phase (nv)?
6If the total vapour pressure of a real solution is higher than the total vapour pressure calculated assuming ideal behavior, the solution is said to show:
7Which parameters are required to use the integrated Clapeyron equation to find the change in melting temperature with pressure?
8How is the Henry's law constant (kH) determined from a vapour pressure vs. mole fraction graph?
9Based on Question 2, what is the relationship between activity (a), activity coefficient (γ), and mole fraction (χ)?
10Which of the following are true for an ideal solution where Raoult's law is followed by all components?
