Hypo is used in photography because of its:

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) In photography,hypo $(Na_2S_2O_3)$ is used as a fixing agent. It reacts with the undecomposed silver bromide $(AgBr)$ present on the photographic

Vedclass · Accepted Answer

Removing undecomposed silver bromide as a soluble complex

Vedclass · Answer

(C) In photography,hypo $(Na_2S_2O_3)$ is used as a fixing agent. It reacts with the undecomposed silver bromide $(AgBr)$ present on the photographic film to form a soluble complex,sodium dithiosulphatoargentate$(I)$. The reaction is: $AgBr + 2Na_2S_2O_3 	o Na_3[Ag(S_2O_3)_2] + NaBr$ This process removes the unexposed $AgBr$ from the film,making the image permanent.

List-$I$ (Compound)	List-$II$ (Colour)
$A$. $Fe_4[Fe(CN)_6]_3 \cdot xH_2O$	$I$. Violet
$B$. $[Fe(CN)_5NOS]^{4-}$	$II$. Blood Red
$C$. $[Fe(SCN)]^{2+}$	$III$. Prussian Blue
$D$. $(NH_4)_3PO_4 \cdot 12MoO_3$	$IV$. Yellow

Similar Questions

Chlorophyll contains

Which of the following hydroxides is soluble in ammonia?

$EDTA$ is used in the estimation of

State the importance of coordination compounds in photography.

Vedclass Test Series

Exam Paper Generator

Online Exam Module