3 is
filled with sulphureted hydrogen gas and fluorine is allowed to enter,
a blue flame is observed on looking through the fluorspar windows
playing around the spot where the fluorine is being admitted. The
decomposition continues until the whole of the hydrogen sulphide is
converted into gaseous fluorides of hydrogen and sulphur.
_Sulphur dioxide_ is likewise decomposed in the cold, with production
of a yellow flame and formation of fluoride of sulphur.
_Hydrochloric acid_ gas is also decomposed at ordinary temperatures
with flame, and, if there is not a large excess of hydrochloric acid
present, with detonation. Hydrofluoric acid and free chlorine are the
products.
Gaseous _hydrobromic_ and _hydriodic acids_ react with fluorine in a
similar manner, with production of flame and formation of hydrofluoric
acid. Inasmuch, however, as bromine and iodine combine with fluorine,
as previously described, these halogens do not escape, but burn up to
their respective fluorides. When fluorine is delivered into an aqueous
solution of hydriodic acid, each bubble as it enters produces a flash
of flame, and if the fluorine is being evolved fairly rapidly there is
a series of very violent detonations.
Pages:
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194