ELI5: Explain Like I'm 5

SN2 reaction

Okay kiddo, so imagine you have a toy box full of different shapes and sizes of blocks. But one day, you want to take out one specific block from the box. So you reach in and grab onto the block you want and yank it out of the box. That's kind of like what happens in an SN2 reaction.

But instead of playing with blocks, we're talking about molecules. Molecules are made up of atoms and they can be connected to each other in different ways. In an SN2 reaction, one molecule sneaks up on another molecule and yanks something called a "leaving group" off of it. This "leaving group" is kind of like the block we talked about earlier – it's one part of the molecule that's easier to grab onto and yank away.

When the leaving group is yanked off, the other molecule that snuck up on it takes its place and becomes connected to the molecule that had the leaving group. This process happens all in one step, which is why it's called an SN2 reaction.

It's important to note that this kind of reaction usually happens in certain conditions, like when the molecules are in a certain kind of solvent or with a certain kind of catalysts. These conditions help the SN2 reaction to happen faster and more easily.

Overall, an SN2 reaction is a way in which molecules can switch up their connections with each other, kind of like how you might switch up which blocks you're playing with when you're bored of one particular shape.