Note 83 — Chapter XI · THE HALOGENS: CHLORINE, BROMINE, IODINE, AND FLUORINE

Kämmerer showed that a solution of sp. gr. 2·127 at 14°, containing 2HIO3,9H2O, solidified completely in the cold. On comparing solutions HI + mH2O with HIO3 + mH2O, we find that the specific gravity increases but the volume decreases, whilst in the passage of solutions HCl + mH2O to HClO3 + mH2O both the specific gravity and the volume increase, which is also observed in certain other cases (for example, H3PO3 and H3PO4).