Which of the following equations represents a decomposition reaction that occurs in the presence of light?
Answer and explanation
Correct answer: \(2AgCl \xrightarrow{sunlight} 2Ag + Cl_2\)
Silver chloride decomposes in sunlight to form silver and chlorine gas: \(2AgCl \xrightarrow{sunlight} 2Ag + Cl_2\). Therefore, it is a photochemical decomposition reaction. In options B and D, heat provides the energy for decomposition, whereas in option C, electricity does so.
Frequently asked questions
What is the correct answer to this question?
\(2AgCl \xrightarrow{sunlight} 2Ag + Cl_2\)
Why is this the correct answer?
Silver chloride decomposes in sunlight to form silver and chlorine gas: \(2AgCl \xrightarrow{sunlight} 2Ag + Cl_2\). Therefore, it is a photochemical decomposition reaction. In options B and D, heat provides the energy for decomposition, whereas in option C, electricity does so.
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.
