What is mechanism of sn1 explain?

The SN1 mechanism, or unimolecular nucleophilic substitution, involves two main steps. First, the leaving group departs from the substrate, forming a carbocation intermediate. This step is rate-determining and occurs independently of the nucleophile. In the second step, the nucleophile attacks the carbocation, leading to the formation of the final product. The reaction typically favors tertiary substrates due to their ability to stabilize the carbocation.