I'm coming up to my A-level mocks and I'm really struggling with some parts of the organic chemistry spec - namely the different mechanisms and their reagents. It's not so much that I don't understand how it all works, it's just I seem to really struggle to remember which acids/bases are used for which mechanisms. If anyone has any tips I'd really appreciate it - an in-depth explanation of why exactly certain chemicals are used when they are might help. Thanks!