What is the name of the active ingredient in fixing solution?

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Multiple Choice

What is the name of the active ingredient in fixing solution?

Explanation:
The fixing solution works by dissolving unexposed silver halide crystals through a thiosulfate salt that forms a soluble silver-thiosulfate complex. The most precise active ingredient used in standard fixers is sodium thiosulfate, which is the specific chemical that carries out this function. Some fixers use ammonium thiosulfate, but the essential idea is that a thiosulfate salt is the fixing agent. The term thiosulphates refers to the class of compounds, not the exact chemical name, so naming the active ingredient as sodium thiosulfate is the most accurate choice.

The fixing solution works by dissolving unexposed silver halide crystals through a thiosulfate salt that forms a soluble silver-thiosulfate complex. The most precise active ingredient used in standard fixers is sodium thiosulfate, which is the specific chemical that carries out this function. Some fixers use ammonium thiosulfate, but the essential idea is that a thiosulfate salt is the fixing agent. The term thiosulphates refers to the class of compounds, not the exact chemical name, so naming the active ingredient as sodium thiosulfate is the most accurate choice.

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