# Universal Gas constant and arrhenius equation

1. Oct 9, 2013

### Woopydalan

Hello,

I am curious as to how the Universal Gas Constant, R, is important with regards to the rates in solids? It is in the Arrhenius Equation

2. Oct 10, 2013

### Staff: Mentor

The gas constant is simply $R \equiv N_\mathrm{A} k_\mathrm{B}$, the Boltzmann constant scaled for a molar quantities.