Is it normal to a man to disrespect his wife in an arguments? Emotionally?

No, not at all. How can it be normal to disrespect anyone, be it husband or a wife in an argument or otherwise? It might be that in the heat of moment person say many a things that are not right but when all settles then no matter, man or a woman, each analyses their actions and know that where they went wrong. And, I guess that after such moment one should apologise if he or she has said anything hurtful.