A text-book of inorganic chemistry / by G.S. Newth.

  • Newth, G. S. (George Samuel)
Date:
1900
Catalogue details

Licence: In copyright

Credit: A text-book of inorganic chemistry / by G.S. Newth. Source: Wellcome Collection.

    169/694 (page 149)
    and of water, and the heat produced by the combustion of marsh gas, the thermal equations being— (1) C + C>2 = COg + 97,000 cal. (2) 27^2 + 0^ = + 136,800 cal. (3) CH^ + 2C>2 = CO^ + %H^O + 212,000 cal. The difference between the thermal value of the last process, and the sum of the first and second, represents the heat of formation of marsh gas— 97,000 + 136,800 - 212,000 = 21,800, hence we get the expression— 0 + - CH^ + 21,800 cal.