What is a state function?

• used to determine heat changes
• whose value is independent of path
• used to determine pressure volume work
• whose value depends on temperature only

What is reversible process in thermodynamics?

Define irreversible change.

Give one difference between an isothermal and an adiabatic process.

• ∆T = 0
• ∆p = 0
• q = 0
• w = 0

Define internal energy of a system

Define enthalpy.

Why is enthalpy considered more useful than internal energy in chemical reactions?