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Coordination Compounds — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds1 Mark
Question
Hypo is used in photography because it is:
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Answer

Hypo forms the complex $\ce{[Ag(S2​O3​)2​}]^{3−}$ from insoluble $Ag$.
$[\ce{Ag(S{2​}O{3​})2}​]^{3−}$ is formed by treatment of $\ce{Na2S2O3​.5H2O}$ with $\ce{AgBr}$.
Therefore, Hypo is used in photography because it is a strong Complexing agent.

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