A series of chemical problems with key for use in colleges and schools / by T.E. Thorpe. Rev. and enl. by W. Tate ; with a preface by H.E. Roscoe.

  • Thomas Edward Thorpe
Date:
1891
Catalogue details

Licence: Public Domain Mark

Credit: A series of chemical problems with key for use in colleges and schools / by T.E. Thorpe. Rev. and enl. by W. Tate ; with a preface by H.E. Roscoe. Source: Wellcome Collection.

    26/160 (page 14)
    By increasing the pressure upon a gas its volume is diminished : by diminishing the pressure the volume is increased. Boyle's Law:—The volume of a gas at constant temperature is inversely ]uoporlional to the pressure to which it is subjected. I. looo c.c. of liydrogcn arc measured under a baro- metric pressure of 740 mm. What will the volume become under the standard pressure of 760 mm. ? 760 ; 740 1000 : .r 740 X 1000 760 973-6 c.c. 2. A litre of air is measured at o'’ C. and 760 mm. What volume will it occupy at 740 mm. and I5°'5 C. ? 273 : 273 + 15’5 740 ; 760 ; 1000 .r. 288-5 X 760 X 1000 273 X 740 1085-34 c.c. Dalton's Law of Partial Presstnrs :—'I'he pressure of a mixture of chemically indifferent gases and vapours is equal to the sum of the ])ressures which each would exert if it alone occupied the whole space. ICXAMI’LES. I. If too vols. of air consist of 20-66 O, 77-9 N, 0-03 CO.,, and i -40 of acpieous vapour, and the barometer stands at 760 mm. ; what is the partial pressure of each of these vapours and gases ? 760 X 20-66 Partial pressure of O = = i57'oi mm. 7<oo X 77 9' N = = 592-11 mm. too CO.,= 76oxo-o3_„.3^„^„^ 100 II ,0 <-40 ^ mm. 100