Which of the following statements regarding developer chemistry is FALSE?
a. Sodium sulfite slows down the oxidation rate.
b. Sodium carbonate provides the alkaline medium.
c. Potassium bromide restrains development of unexposed silver halide crystals.
d. Potassium alum swells the gelatin.
d. The activator (sodium carbonate) in developer softens and swells the gelatin, allowing more of the exposed silver halide crystals to come into contact with the developing agents. Potassium alum is a component of fixer that shrinks and hardens the gelatin.
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