SUMMARY
The discussion focuses on calculating the partial pressure inside a heated sealed vessel with a total capacity of 25 mL, filled with 20 mL of an aqueous mixture of nitric acid (HNO3) and hydrofluoric acid (HF) in a 1:3 ratio. The temperature is varied at 80°C, 100°C, and 120°C. The calculation method involves using the vapor-liquid boundary from the phase diagram of water, along with the atmospheric pressure if air is present in the vessel at the start of the experiment.
PREREQUISITES
- Understanding of vapor-liquid equilibrium and phase diagrams
- Knowledge of partial pressure calculations
- Familiarity with the properties of nitric acid (HNO3) and hydrofluoric acid (HF)
- Basic thermodynamics principles related to temperature and pressure
NEXT STEPS
- Study the phase diagram of water to understand vapor-liquid boundaries
- Learn about the Antoine equation for calculating vapor pressures of liquids
- Research the effects of temperature on the vapor pressure of aqueous solutions
- Explore the concept of Dalton's Law of Partial Pressures in closed systems
USEFUL FOR
Chemical engineers, laboratory technicians, and students studying thermodynamics and fluid mechanics will benefit from this discussion, particularly those involved in experiments with acid mixtures and pressure calculations in sealed environments.