Question

Which reaction is ther in black and white photography

Answer 1

Answer:

Black and white photography mainly depends upon the light sensitive material that helps in forming such contrasting images. When exposed to AgBr, the image then forms on the film. While the image is developing, sodium sulphate, an oxidised reducing agent converts the AgBr remains into visible metallic surface.

Answer 2

Answer:

2 AgBr - 2 Ag +Br2 in presence of sunlight