Question

which one of the following is an example of a state function?
answer:
a heat
b work
c distance
d enthalpy

Explanation:

A state function depends only on the initial and final states of a system, not on the path taken. Enthalpy (\(H\)) is a state function as it is defined by \(H = U+PV\) (where \(U\) is internal energy, \(P\) is pressure, \(V\) is volume), and \(U\), \(P\), \(V\) are all state functions. Heat (\(q\)) and work (\(w\)) are path - dependent (e.g., different paths for a thermodynamic process can lead to different amounts of heat absorbed/released or work done). Distance is also path - dependent (e.g., different routes between two points give different distances).

Answer:

D. enthalpy