Text-book for students of chemistry. Containing a condensed view of the facts and the principles of the science / [D.B. Reid].

  • David Boswell Reid
Date:
1836
Catalogue details

Licence: Public Domain Mark

Credit: Text-book for students of chemistry. Containing a condensed view of the facts and the principles of the science / [D.B. Reid]. Source: Wellcome Collection.

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    TABLE of the Specific Gravity, Symbols, and Equivalent Weights, of the Gases, and their most important Compounds. Symbols. 1 1 1 1 Names, Compounds, and , their Elements. ; , 1 Weight. Bulk of the pre¬ ceding weight. Specific gravity. Number of Equi¬ valents which ex¬ press the sp. gr. Composition of the preceding Com¬ pounds by weight and by measure, with the symbols of the component parts. .2 S cn 1 Weight. Measure. cn Weight. Measure. H Hydrogen 1 □ 1 1 1 O Oxygen 8j a 16 2 ! Ai Oxide of Hydrogen 9 □ 9 1 o 8 □ -t- H 1 □ N Nitrogen 14 □ 14 1 •N Oxide of 22 □ 22 1 1 O 8 □ + N 14 □ :N Binoxide of ,80 m 15 1 i ()2 16 B +. :N 14 □ IN Hyponitrous Acid 38 0 ? p 1 24 B=] 4* N 14 □ •IN Nitrous Acid 4G □ 46 i , (T 32 hH + N 14 □ ;iN Nitric Acid 54 ? ? ? ' 05 40 EB=3 + ,N 14 □ Atmospheric Air 36 □ib 141 2 ; .q i o 8 O -f N 28 m NH3 Ammonia 17 1.11 81 1 <> H^ 3 mn + N 14 □ S Sulphur .16 □ ? 16 1 :S Sulphurous Acid 32 □ 32 1 i 02 16 □ + S 16 □ :S Sulphuric Acid 40 ? ? p O^ 24 Fh + S 16 □ HS Sulphureted Hyd. 17 □ 17 1 H 1 □ + s 16 □ HS‘^ Bisulphureted Hyd. 33 p ? ? 1 H 1 □ S2 32 m P Phosphorus 16? □ ? i HP Hydruret of 17 ? 17? 1? 1 . H 1 □ + P 16 □ C Carbon 6 □ ? 6? 1 ? •c Carbonic Oxide 14 □ 14 1 1 O 8 a + c 6 □ :C Carbonic Acid 22 □ 22 1 02 16 B -f c 6 □ C^H Bicarburet of Hyd. 13 ? p P H 1 □ + C2 12 m HC Hydruret of 7 o 14 2 ; H 1 □ + c 6 □ H^C Bihydruret of 8 □ 8 1 1 H2 2 nj + c 6 □ OC^H^ Alcohol 23 □ 23 1 2HC 14 B + •H 9 □ OC*H5 Sulphuric Ether - _ 37 p 37 1 4HC 28 + •H 9 □ C^N Cyanogen 26 □ 26 1 N 14 □ + C2 12 m HC^N Hydrocyanic Acid ■ 27 m 131 1 H 1 □ Cl Chlorine 36 □ 36 1 •:C1 Peroxide of 68 □□ 34 1 2 ! 32 m + Cl 36 □ •••Cl Chloric Acid 76 ? p ? , i 05 40 H-b + Cl 36 □ HCl Muriatic Acid 37 m 18| 1 2 H 1 □ Cl 36 □ I Iodine 124 □ 124 1 j : :I Iodic Acid 164 ? p ? ! 0'5 40 FFh + I 124 □ HI Hydriodic Acid Il25 m 62 4 H 1 □ I 124 □ Br Bromine ! 78 □ 75 1 HBr Hydrobromic Acid i 79 1 1 m 374 4 H 1 □ + Br 75 □ 1st column contains the symbols of the compounds. 2d column contains their names. .Id column contains the weight of an equivalent quantity of each. 4th column contains the bulk or measure of the weight referred to in the pre¬ ceding columns, hydrogen being taken as a standard of comparison. The square figure represents a whole measure, and the others indicate proportional quantities. Thus, in reading the third line, we say, “ 'H is termed oxide of hydrogen (water), its equivalent weight is 9, which corresponds with one measure.’ 5th column shews the specific gravity of the gases; hydrogen being taken as a standard of comparison. 6th column shews the relation between the equivalent number and the specific gravity which the same bulk of gas (one measure) must always be taken. Lastly, the remaining columns indicate the quantity by weight and by measure of the elements, in the proportion referred to in the preceding columns; the rest of the third line is therefore read in the following manner,—“ being composed of oxygen 8, or half a measure ; 8 parts of oxygen filling the measure half full, while 1 of hydrogen, which is so much lighter, fills it entirely.” Though the equiva¬ lent by weight of a compound is found by adding the equivalents of its elements, the corresponding bulk is often less than the bulk of both separately, the particles packing, as it were, in less space when combined.
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