What is the scientific reason for storing silver bromide in a dark-coloured bottle?
Answer and explanation
Correct answer: To prevent decomposition caused by light
Silver bromide decomposes in the presence of light to form silver and bromine: \(2\mathrm{AgBr}\xrightarrow{\text{light}}2\mathrm{Ag}+\mathrm{Br}_2\). A dark-coloured bottle reduces the light reaching the substance and thus helps prevent this photochemical decomposition. This is not related to dissolving it in water or increasing its hardness.
Frequently asked questions
What is the correct answer to this question?
To prevent decomposition caused by light
Why is this the correct answer?
Silver bromide decomposes in the presence of light to form silver and bromine: \(2\mathrm{AgBr}\xrightarrow{\text{light}}2\mathrm{Ag}+\mathrm{Br}_2\). A dark-coloured bottle reduces the light reaching the substance and thus helps prevent this photochemical decomposition. This is not related to dissolving it in water or increasing its hardness.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
