What is the balanced chemical equation developing photographic films-2AgBr- 2Na-2S-2O-3rightarrow Na-2-Ag-2-S-2O-3-2- 2NaBr2AgBr- 2Na-2S-2O-3rightarrow Na-3-Ag-2-S-2O-3-2- 2NaBrAgBr- Na-2S-2O-3rightarrow Na-Ag-S-2O-3-2- NaBrAgBr- 2Na-2S-2O-3rightarrow Na-3-Ag-S-2O-3-2- NaBr

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Toppr Admin · Accepted Answer

AgBr react with sodium thiosulphate -hypo- to give soluble sodium argentothiosulphate-AgBr-2Na2S2O3-x2192-Na3-Ag-S2O3-2-NaBrThe light sensitized photographic film is treated with hydroquinone which is a very mild reducing agent- It does not affect the unexposed silver bromide-

List-I	List-ll
A) $2 N a_{2} S_{2} O_{3} + I_{2} Δ - \to$	1) Photographic complex $A g_{2} S_{2} O_{3}$
B) $N a_{2} S_{2} O_{3} + d i l . H C l \to$	2) $A g_{2} S + N a B r$
C) $N a_{2} S_{2} O_{3} + A g N O_{3} \to$	3) $N a C l + S O_{2} + S + H_{2} O$
D) $N a_{2} S_{2} O_{3} + A g B r \to$	4) $N a_{2} S_{4} O_{6} + 2 N a I$

What is the balanced chemical equation for developing photographic films?2AgBr+2Na2S2O3→Na2[Ag2(S2O3)2]+2NaBr2AgBr+2Na2S2O3→Na3[Ag2(S2O3)2]+2NaBrAgBr+Na2S2O3→Na[Ag(S2O3)2]+NaBrAgBr+2Na2S2O3→Na3[Ag(S2O3)2]+NaBr

AgBr react with sodium thiosulphate (hypo) to give soluble sodium argentothiosulphate.AgBr+2Na2S2O3→Na3[Ag(S2O3)2]+NaBrThe light sensitized photographic film is treated with hydroquinone which is a very mild reducing agent. It does not affect the unexposed silver bromide.