Mell Is the element silver used in photography?
Today, the most important use of silver is in photography. Three silver compounds used in photography are silver chloride (AgCl), silver bromide (AgBr), and silver iodide (AgI). Silver is also used to make electrical equipment, mirrors, medical and dental equipment, and jewelry.
Which mineral element is used in photography?
Its compounds are used in photographic and X-ray film….
| Silver | |
|---|---|
| Appearance | lustrous white metal |
| Standard atomic weight Ar, std(Ag) | 107.8682(2) |
| Silver in the periodic table |
How easy is it to extract and use silver?
Silver ore is mined through both open-pit and underground methods. The open pit method involves using heavy machinery to mine deposits relatively near the earth’s surface. The remaining 72% comes from projects where silver is a by-product of mining other metals, such as copper, lead and zinc.
Why does silver become black?
Silver becomes black because of hydrogen sulfide (sulfur), a substance that occurs in the air. When silver comes into contact with it, a chemical reaction takes place and a black layer is formed. Silver oxidizes faster in places with a lot of light and high humidity.
Why does white silver chloride turns GREY in sunlight?
Silver chloride turns grey when kept in sunlight. This is because a photolytic decomposition reaction takes place where the white silver chloride decomposes in the presence of sunlight to form white silver and chlorine gas which escapes.
How do you get silver out of silver ore?
When the ore is the cooled down a crust containing silver and zinc forms on the surface. The crust is then collected and then distilled to extract silver from the zinc. When silver is found in ores containing copper then the electrolytic refining method is used to extract the silver.
What kind of silver is used in photographic film?
Other objects use much more of the silver metal, however. About half of the silver produced in the United States goes into photographic film. Pure silver is first converted to a compound: silver chloride, silver bromide, or silver iodide. The compound is then used to make photographic film (see accompanying sidebar).
What is the use of silver bromide in photography?
Used to make an emulsion,which is used to develop photographic image. Silver bromide is light sensitive and when exposed to light it makes a photographic image.
What kind of materials are used in photography?
The developers that we use in photography play the same part for the silver that the charcoal does for the iron; they take away the bromine from the silver bromide and leave the metallic silver behind. The emulsion coated on films and used for making the negative contains silver bromide with a small addition of silver iodide.
Which is light sensitive compound X of silver?
a light sensitive compound ‘x’ of silver is used in black and white photography on exposure to sunlight its colour changes to grey. (a) identify ‘x’. (b) write a chemical equation to express the above change a. X is silver bromide. c. Its photolytic decomposition reaction.