pV diagrams

• Isothermal Diagrams

  Shape of a 1/Y curve
• Work Done is

  Area under a pV graph
• In adiabatic curves

  • Gradient is steeper than an isothermal diagram
  • In an expansion, the arrow is along the curve
  • In an compression the arrow is up the curve
• At constant pressure

  pV graph will be a straight horizontal line
• At constant volume

  the pV graph will be a straight vertical line
• How to find out the work done of a cycle

  Area inside the loop