Question: 

1. Is it permissible to perform Salaat wearing gloves? 

2. By saying "Aah" in Salaat due to pain, is the Salaat of a person invalidated? 

Answer: 

It is permissible to perform Salaah with gloves.i

Saying “aah” due to pain will invalidate a person’s Salaah.ii

AND ALLAH TA'AALA ALONE IN HIS INFINITE KNOWLEDGE KNOWS BEST