Extraction of Metals - Result Question 91

####94. Give reason for the following in one or two sentences : “Silver bromide is used in photography.”

(1983)

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Solution:

  1. $AgBr$ is sensitive to visible light.

$$ AgBr \xrightarrow{h \nu} Ag+\frac{1}{2} Br _2 $$

A photographic plate coated with $AgBr$, when exposed to light, gets blackened due to the above reaction.



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