CAR
C 253 )
Table.
CAR
Oxjfgen Carbo-required nic Acidfor produc’dfatura*tion.
from Marlbes - - - -
-Silk - - - - .
■ -Sugar - _ . „ .
-Charcoal - - _ -
-D° in another experim'.
- D° - - - - - -
-D°.
-Oak Wood ---
■ -Cannel Coal - - -
-Wax.
Olefiant Gas - - -
-— Camphor - - - -
-Ether - - - _ .
— — Alcohol - - - -Hydrogen paffed repeatedlyover red-hot Charcoal -from Ether - - - - \
--Alcohol - - - J
Gafeous Oxydof Carbon -
.cub.inth.
72.4;88.4:80. =59-5=
Pure Oxygen Hydro*Carbon. not genemploy'd whichfor the the re-Carbo- fidue ofnic Acid. Oxygenwouldfaturate.
grains, cub.inch. cub.inch.
9.4 77.6
xi.5 61.6
10.4 20.
7.74 78.6
Specific
Gravity,AirbeingZ.qoq .
Authority.
49. 21. = 2.73 28.
equal for equal weights ofthe inflammable gaffes40. 92. = 11 96
155-2
Berthollel
123.2
Ditto
40.
Ditto
157.2
Ditto
Ditto
50.
Henry
52.
478
Cruikfhank
23.2
Berthollet
132.
Henry
42.
Ditto
5°-
Ditto
140.
Ditto
166.
Ditto
210.
.905
Ditto
120.
.660
Cruikftiank
124.
.660
Ditto
86.
Ditto
56.
Deformes
Dutch Chem:
.968
Cruikftiank
In the above table it is to be obferved thatBerthollet 8 eftimates the quantity of oxygen re-quired to form a given quantity of carbonic acidgas to be equal in Bulk to the acid gas, which isnearly accurate; and alfo that two parts in Bulkof hydrogen with one of oxygen are the pro-portions in which thefe fubftances unite whenthey form water. Hence taking the gas fromfugar as an example, 100 meafures of it require100 meafures of oxygen gas, 80 of which arefuppofed to go to form the 80 meafures of car-bonic acid actually produced, leaving a refidueof 20 meafures of oxygen, the whole of whichis fuppofed to be employed in forming the waterthat appears after combuftion, and which there-fore mull have required twice the bulk, or 40meafures, of hydrogen gas.
An infpedlion of the above table will fhew fogreat a variety in the proportional refults as tomake it evident that no cafual difference in thedrying of the gaffes, or accidental circumftancesCau account for it. For, taking only the two
t Mem. de L’
firft columns (thefe being the regifters of adlualexperiments made by perfons on whofe (kill andaccuracy much reliance is to be placed) if thereexifted any uniform proportion between the car-bonous and the hydrogenous ingredient in all theinflammable gaffes, a fimilar proportion wouldbe found between the refpe&ive quantities ofoxygen neceffary to faturation, and the carbonicacid produced; fo that taking the gas fromfugar as a general ftandard of comparifon, thegas from marfhes fhould yield 120 cubic inchesinftead of 72.4: the gas from filk 120 infteadof 88.4: from charcoal, no, inftead of 59.5:from olive oil, 106, inftead of 121: from lampoil, 152, inftead of 124 ; from wax, 176, infteadof 137, &c. Still however fome tolerableagreement is found between fome of the hydro-carbonats that are obtained Irom fome of themoft inflammable of the vegetable fubftances orproducts as from coal, camphor, ether, &c.For taking the gas from coal as a ftandard of'comparifon, the gas from was fliould yield byAcad, for 1785,