Internal Energy of Solid (U = 3RT)
jee-mainjee-advanced
U = 3RT
What each symbol means
| Symbol | What it stands for |
|---|---|
| R | Universal gas constant = 8.314 J mol⁻¹ K⁻¹ |
| T | Absolute temperature (K) |
| U | Internal energy per mole of solid (J/mol) |
When to use this
For 1 mole of solid at ordinary temperatures. Based on 3D harmonic oscillator model with N atoms. Average energy per atom = 3kBT.