Chemistry
NULL
Medium
Question
Which of the following is used in photography?
A
NaHSO3
B
Na2S2O3
✓ Official correct answer
C
Na2S
D
Na2SO3
Community credibility
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A
NaHSO3
No member explanations yet for this option.
B
Na2S2O3
No member explanations yet for this option.
C
Na2S
No member explanations yet for this option.
D
Na2SO3
No member explanations yet for this option.
Explanation
Sodium thiosulfate (Na2S2O3, "hypo") is used in photography to dissolve unexposed silver halide and fix the developed image.
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