At which pH does pepsin have maximum activity? At which pH does trypsin have maximum activity? At which pH does pepsin have maximum activity? At which pH does trypsin have maximum activity? pepsin: 2 trypsin: 6 pepsin: 2 trypsin: 8 pepsin: 7 trypsin: 8 pepsin: 8 trypsin: 7 pepsin: 8 trypsin: 2