The recovery of silver from the solutions used in developing and fixing photographic film and prints present just such a problem. Silver is an expensive metal, and the recovery is profitable. Moreover, if not recovered, the silver ions would constitute and undesirable pollutant in water supplies. What is undesirable pollutant?

A g B r

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A g C l

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A g_{2} S

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A g_{2} O

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Solution

The correct options are
A $A g B r$
C $A g_{2} S$
The undesirable pollutants used in developing and fixing photographic film and prints present are $A g B r$ & $A g_{2} S$ .

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The recovery of silver from the solutions used in developing and fixing photographic film and prints present just such a problem. Silver is an expensive metal, and the recovery is profitable. Moreover, if not recovered, the silver ions would constitute and undesirable pollutant in water supplies

The equation in which silver recovered from such solution is :

A g_{2} C O_{3} Δ \to 2 A g + C O_{2} + \frac{1}{2} O_{2}

Q. In what form is silver present in the solutions after developing and fixing photographic film?

Q. During the developing process in photography, unexposed

A g B r

is washed away by complexation of

A g (I)

by sodium thiosulphate solution. These washings are often disposed of as waste. However, metallic silver can be recovered from them by adding cyanide, followed by zinc. What is the hybridization of zinc is the complex formed during the recovery of silver?

In the extraction of silver, the recovery of silver from silver nitrate solution involves displacement by copper metal. Write down the respective reaction.

In the refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal. Write down the reaction involved.

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The correct options are A AgBr C Ag2SThe undesirable pollutants used in developing and fixing photographic film and prints present are AgBr & Ag2S.

The correct options are
A $A g B r$
C $A g_{2} S$
The undesirable pollutants used in developing and fixing photographic film and prints present are $A g B r$ & $A g_{2} S$ .