Chao ban, ban co the giai thich them cho minh nghia cua tu "đồng sôi" (azeotropic) duoc khong boi vi minh dang tim hieu nguyen nhan trifloroacetic acid khi hoa tan trong nuoc sau mot thoi gian thi tao nhung mang mong, do co phai la hien tuong cua azeotrophic