BITSAT2021ChemistryIonic EquilibriumActual
The solubility of silver bromide in hypo solution involves the formation of:
Options
- AAg ₂ SO ₃
- BAg ₂ ~S ₂ O ₃
- CAg ⁺
- DNH ₄ ⁺
Correct answer
B. Ag ₂ ~S ₂ O ₃
Step-by-step solution
Hypo solution is Na ₂ ~S ₂ O ₃ solution which is used in photography for fixing films & prints. Photographic emulsions are made of AgBr. After developing, the film is put into hypo solution. This forms soluble complex with Ag . Na ₂ ~S ₂ O ₃+ Ag Br Ag ₂ ~S ₂ O ₃ Na ₂ ~S ₂ O ₃ Na ₅ [ Ag ( S ₂ O ₃ )₃ ]