Effect of Varying Tin.
| Stannous chloride added | 1.0 | c.c. | 10.0 | c.c. | 20.0 | c.c. | 50.0 | c.c. | 100.0 | c.c. |
| "Permanganate" required | 0.7 | " | 8.8 | " | 18.0 | " | 47.4 | " | 95.4 | " |
Effect of Varying Bulk.
| Bulk | 50.0 | c.c. | 100.0 | c.c. | 200.0 | c.c. | 500.0 | c.c. |
| "Permanganate" required. | 9.0 | " | 18.3 | " | 17.4 | " | 15.1 | " |
The two last series show an interference, which is due to the oxygen dissolved in the water, as may be seen from the following similar experiments, which were, however, performed with water freed from oxygen and in which the titrations were effected in an atmosphere of carbonic acid.
Effect of Varying Tin.—A new solution of stannous chloride was used.
| Stannous chloride added | 1.0 | c.c. | 10.0 | c.c. | 20.0 | c.c. | 50.0 | c.c. | 100.0 | c.c. |
| "Permanganate" required | 1.0 | " | 10.0 | " | 19.8 | " | 49.6 | " | 99.3 | " |
Effect of Varying Bulk.
| Bulk | 30.0 | c.c. | 50.0 | c.c. | 100.0 | c.c. | 200.0 | c.c. | 500.0 | c.c. |
| "Permanganate" required | 19.8 | " | 19.8 | " | 19.8 | " | 19.8 | " | 19.8 | " |