How do acid base reactions differ from redox reactions?
Redox reactions are conceived to result from electron transfer between reagents.....
Redox reactions are conceived to result from electron transfer between reagents, and a FORMAL change in oxidation number.
On the other hand, acid-base reactions may not necessarily involve a change in formal oxidation state.
For the general acid base reaction in water.....
...of course, electrons couple to form the new
On the other hand we could conceive of some acid-base reactions that are formal redox reactions, e.g.
This is a formal comproportionation reaction; hydride anion is oxidized, and protium ion (in water) is reduced to give zerovalent dihydrogen gas.