Lecture : Gen Chem Lecture-7
Document Summary
Potential energy, v- the stored energy has potential to do work. Work: w=fd, potential energy, energy due to condition, position, or composition, associated with forces of attraction or repulsion between objects, energy can change from potential to kinetic. In addition to heat effects chemical reactions may also do work: gas formed pushes against the atmosphere. Internal energy, u: total energy (potential and kinetic) in a system, translational kinetic energy, molecular rotation, bond vibration, chemical bonds, electrons. Uisolated system=0, and we can say: the energy of an isolated system is constant, any property that has a unique value for a specified state of a system is said to be a. Function of state or a state function: water at 293. 15k and 1. 00 atm is in a specified state, d= 0. 99820 g/ml, this density is a unique function of the state. It does not matter how the state was established: u is a function of state.
