Which of the following reactions represents the change that occurs when a photographic film is exposed to sunlight?

Assessment: WAEC SSCE - Chemistry - 2001 (Objective) Subject: Chemistry

Question 1 Report

Which of the following reactions represents the change that occurs when a photographic film is exposed to sunlight?
Answer Details
When a photographic film is exposed to sunlight, the silver halide grains in the film emulsion are converted to metallic silver. This process involves the reduction of silver ions (Ag+) to neutral silver atoms (Ag) by the electrons (e-) produced by the exposure to light. Therefore, the correct reaction that represents the change that occurs when a photographic film is exposed to sunlight is: Ag+ + e- → Ag
Read lesson note on Kinetic Theory Of Matter And Gas Laws (JAMB)
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