Q.Write Arrhenius equation and explain the terms involved.

Arrhenius proposed $k=Ae^{-E_a/RT}$, where A is the frequency factor (roughly temperature-independent, linked to collision frequency), R the gas constant, $E_a$ the activation energy, and T the absolute temperature -- packaging collision theory's derivation into one working formula. Taking logs, $\ln k=\ln A-\dfrac{E_a}{RT}$, matching $y=mx+c$: a plot of $\ln k$ (or $\log k$) against $1/T$ is a straight line with NEGATIVE slope $-E_a/R$ for a reaction genuinely obeying Arrhenius behaviour over its whole temperature range; a curved plot, or one with a positive slope, both signal deviation from this simple model. …