Which one of the following reactions represents developing in photography?

Question

Which one of the following reactions represents developing in photography? (A)  AgNO3+NaBr xrightarrowAgBr+NaNO3  (B)  AgBr+2Na2S2O3 xrightarrow Na3[Ag(S2O3)2]+NaBr  (C)  AgBr+hv xrightarrow[]AgBr*  (D)  C6H4(OH)2+2AgBr* xrightarrow[]C6H4O2 +2HBr+2Ag

Tardigrade Admin · Accepted Answer

undersetquinol mathopC6H4(OH)2 +2AgBr* xrightarrow[] undersetquinone mathopC6H4O2 +2HBr+2Ag reaction represents developing in photography. Because in developing in photography quinol C6H4(OH)2 is used as mild reducing agent to reduce more silver bromide to silver. It is done to make silver visible.

Q. Which one of the following reactions represents developing in photography?

$A g N O_{3} + N a B r A g B r + N a N O_{3}$

$A g B r + 2 N a_{2} S_{2} O_{3}$ $N a_{3} [A g (S_{2} O_{3})_{2}] + N a B r$

$A g B r + h v A g B r^{*}$

$C_{6} H_{4} (O H)_{2} + 2 A g B r^{*} C_{6} H_{4} O_{2}$ $+ 2 H B r + 2 A g$

$A g B r + 2 N H_{3} [A g (N H_{3})_{2}] B r$

Q. Which one of the following reactions represents developing in photography?

AgNO3​+NaBr​AgBr+NaNO3​

AgBr+2Na2​S2​O3​​ Na3​[Ag(S2​O3​)2​]+NaBr

AgBr+hv​AgBr∗

C6​H4​(OH)2​+2AgBr∗​C6​H4​O2​ +2HBr+2Ag

AgBr+2NH3​​[Ag(NH3​)2​]Br

quinolC6​H4​(OH)2​​+2AgBr∗ ​quinoneC6​H4​O2​​+2HBr+2Ag reaction represents developing in photography. Because in developing in photography quinol C6​H4​(OH)2​ is used as mild reducing agent to reduce more silver bromide to silver. It is done to make silver visible.

$A g N O_{3} + N a B r A g B r + N a N O_{3}$

$A g B r + 2 N a_{2} S_{2} O_{3}$ $N a_{3} [A g (S_{2} O_{3})_{2}] + N a B r$

$A g B r + h v A g B r^{*}$

$C_{6} H_{4} (O H)_{2} + 2 A g B r^{*} C_{6} H_{4} O_{2}$ $+ 2 H B r + 2 A g$

$A g B r + 2 N H_{3} [A g (N H_{3})_{2}] B r$