Is it possible to use IRC Chat on new Empathy?
I can't find any option to add IRC acount on the Online Accounts service.
Solution 1:
You need to install the irc plugin account-plugin-irc
sudo apt-get install account-plugin-irc
After that you should be able to use empathy as irc client but beware empathy has a very limited function as an IRC cliente. I would recomend to use a dedicated IRC client.
https://help.ubuntu.com/community/InternetRelayChat#IRC_Clients