554
DR. A. SCOTT ON THE COMPOSITION OF WATER BY VOLUME.
Assuming the impurity to be equally distributed between the two gases we have
7034.2000 of hydrogen unite with 3514.3 of oxygen,
or
0002.0016 of hydrogen„ unite with„ 0001.0 of oxygen,„
If all impurity be in oxygen, we get the ratio
2.0019 : 1,
and if all in the hydrogen,
2.0014 : 1.
For the experiment with the apparatus arranged as in fig. 1, I have chosen an experiment in which the hydrogen measured is in excess of the oxygen. The constant volume of the apparatus = 3826.3 grms. of mercury.
April 7th, 1892. Experiment XXXIII., Series IIe.
Oxygen from silver oxide (from silver sulphate and potassium hydrate)—
| millims. | ||||
| Height of mercury in manometer tube | = | 154.5 | ||
| Height of„ mercury in„ volume tube | = | 145.4 | ||
| Height of mercury Correction | + | 9.1 | ||
| Pressure of aqueous vapour | = | 013.4 | ||
| Pressure of Capillarity correction | = | 003.9 | ||
| − | 017.3 | |||
| Barometer 790.6 − 29.1 | = | 761.5 | ||
| Pressure of oxygen = 761.5 + 9.1 − 17.3 | = | 753.3 | ||
Temperature = 15.92° C.
Hydrogen from palladium hydride—
| millims. | ||||
| Height of mercury in manometer tube | = | 154.6 | ||
| Height of„ mercury in„ manometervolume tube„ | = | 145.3 | ||
| Height of mercury Correction | + | 9.3 | ||
| Pressure of aqueous vapour | = | 013.5 | ||
| Pressure of Capillarity correction | = | 003.9 | ||
| − | 017.4 | |||
| Barometer 790.7 − 29.0 | = | 761.7 | ||
| Pressure of hydrogen = 761.7 + 9.3 − 17.4 | = | 753.6 | ||
Temperature = 15.97° C.
