Question

38. Explain the chemistry of black and white photography? Give the chemical reaction in black
and white Photography? Is it a decomposition reaction? Why? ​

Answer 1

Answer:

this is due to the decomposition of silver chloride into silver and chlorine by write the chemical reaction is 2 agbr becomes in the presence of the sunlight to ag + br2 the above reaction is used in the black and white photography we have seen that the decomposition required energy either in the form of the heat light or electricity from breaking down the reactant reaction in which energy is observed and known as the endothermic reaction .

Expla nation:

Answer 2

Answer:

Reaction:

2AgCl -----> 2Ag + Cl2

2AgBr ------> 2Ag + Br2

Yes, it is a photolytic decomposition reaction.

This is because silver chloride decomposes in presence of sunlight to produce silver and chlorine gas.

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