Service chemistry : being a short manual of chemistry and metallurgy and their application in the naval and military services / by Vivian Byam Lewes and J.S.S. Brame.

  • Lewes, Vivian B. (Vivian Byam), 1852-1915.
Date:
1913
Catalogue details

Licence: In copyright

Credit: Service chemistry : being a short manual of chemistry and metallurgy and their application in the naval and military services / by Vivian Byam Lewes and J.S.S. Brame. Source: Wellcome Collection.

    90/622 (page 68)
    OXIDES AND SALTS The ordinary processes of combiistion in which the oxygen of tlie air or oxygen gas alone is concerned are processes of oxidation and result in the production of oxides of the substances imder- going combustion. All the elements, with the exception of fluorine, combine with oxygen, and even fluorine forms some double salts containing oxygen, such as the oxy-fluoride of phosphorus. If the characters of the different oxides are exammed, it is found that they admit of ready classification into three groups. I. Acid-forming’ Oxides.—When sulphur, phosphorus, or carbon are burned in oxygen, the oxides formed are soluble in water forming acids, and these acid-forming oxides are sometimes called anhydrides. Sul])lmr B -h Oxypjen O2 Sidphur dioxide or sulphurous aiihvdrido SO2 PJiospliorus 4P -1- Oxv^cn 5O2 Phosphorus jjentoxide or ]diosphoric anhydride 2(P20,)‘ Caj'bon c J- 1 Oxj'^gen Oo Carbon dioxide or carbonic anhydride = CO2 Combined with walor Ihey yield the corresponding acids— Sulphur dioxide SO2 + Water H2O Sulphurous acid H2SO3 Pliosphorua pentoxide P2O, + Water 8H2O Phosphoric acid ^(H^PO^) Carbon dioxide CO2 j- 1 Water H2O Carbonic acid = H2CO3