Redissoudre belong to the 3
rd group.
Redissoudre is conjugated the same way that verbs that end in :
-udre
Redissoudre is conjugated with
auxiliary avoir.
Redissoudre is a defective verb.
It can not be conjugated in all possible forms.
Redissoudre verb is
direct transitive.
French verb redissoudre can be conjugated in the reflexive form:
Se redissoudre
Redissoudre verb is a direct transitive verb, so passive voice can be used.