Sngf (hoarhak)
Sngf 🔊 (酸; acid) si cidkhoarn hoarhabbut, ciaf ee hoarhabbut na iongkae ti zuie laixbin, e safngsefng pie sunzuie khaq koaan ee zuysox lizuo oaqliong, iah tiøqsi pie 7.0 khaq sex ee pH. Sngf ti hoarhagsiong ee texnggi zwiaux u Brønsted-Lowry, Arrhenius, kab Lewis 3-khoarn.