silver chloride
Noun
Meaning
a chloride used chiefly in the manufacture of photographic emulsions
Source: WordNetSynonyms
Antonyms
Hypernyms
Examples
Fresh silver chloride, formed when silver objects are immersed for long periods in salt water, is pale yellow colored, becoming purplish on exposure to light and projects slightly from the surface of the artifact or coin.
Gernsheim, pg. 7 The Swedish chemist Carl Wilhelm Scheele showed in 1777 that silver chloride was especially susceptible to darkening from light exposure, and that once darkened, it becomes insoluble in an ammonia solution.
The extent of solubility ranges widely, from infinitely soluble (without limit) (fully miscible citation ) such as ethanol in water, to poorly soluble, such as silver chloride in water.
In 1801, the German physicist Johann Wilhelm Ritter made the discovery of ultraviolet by noting that the rays from a prism darkened silver chloride preparations more quickly than violet light.
Ritter noted that invisible rays near the violet edge of a solar spectrum dispersed by a triangular prism darkened silver chloride preparations more quickly than did the nearby violet light.
The complex ion formation is favorable takes away a significant portion of the silver ions in solution, as a result the equilibrium for the formation of silver ions from silver chloride will shift to the right to make up for the deficit.