Question

The reaction which is used in black and white photograph is:

A. 2AgBr(s) \(\overset{sunlight}{\longrightarrow}\)2Ag(s) + Br₂ (g) 

B. CH₄ (g) + Cl₂ (g) \(\overset{sunlight}{\longrightarrow}\) CH₃Cl(g) + HCl(g) 

C. 2NaCl(s) \(\overset{Electric current}{\longrightarrow}\)Na(s) + Cl₂ (g) 

D. 2KClO₃ (s) \(\overset{Heat}{\longrightarrow}\)  2KCl(s) + 3O₂ (g)

Answer 1

2AgBr(s) + sunlight → 2Ag(s) + Br₂ (g)

The above reaction is a type of decomposition reaction which is used in black and white photography.