Investigating Gas Laws & Dalton’s Law
Investigating Gas Laws & Dalton’s Law
Lesson duration is: 42 minItems in this lesson
Investigating Gas Laws & Dalton’s Law
What do you already know about gas laws and pressure-volume relationships?
Learning Objective
At the end of the lesson you will be able to explain and interpret the relationship between gas volume and temperature at constant pressure, understand isoprocess graphs, and describe Dalton’s Law of Partial Pressures.
What Are Isoprocesses?
Isochoric (V=const), Isobaric (p=const), Isothermal (T=const).
Isoprocesses are thermodynamic processes where one property (pressure, volume, or temperature) remains constant.
Main Types
Definition
Isobaric Processes
During isobaric processes, a gas changes its volume as the temperature changes, while the pressure remains constant.
Volume vs Temperature Graph (Isobaric)
On an isobaric process graph, volume increases linearly with temperature (Kelvin) at constant pressure, according to Charles’s Law.
Experiment: Volume-Temperature Relationship
Investigate how the volume of a gas changes with temperature at constant pressure by heating a sealed, frictionless piston and measuring volume at different temperatures.
Dalton's Law of Partial Pressures
Dalton’s Law states that the total pressure of a gas mixture equals the sum of the partial pressures of each component gas.
Summary & Reflection
You have learned about isoprocesses, how volume relates to temperature at constant pressure, and Dalton’s Law. Think: How are these ideas useful in real-life scenarios involving gases?
Write down 3 things you learned in this lesson.
Write down 2 things you want to know more about.
Ask 1 question about something you haven't quite understood yet.
