The P Block Elements Ques 57
57. Hypo is used in photography to
[1988]
(a) reduce $AgBr$ grains to metallic silver
(b) convert metallic silver to silver salt
(c) remove undecomposed silver bromide as a soluble complex
(d) remove reduced silver
Topic 3: Halogen Family
Show Answer
Solution:
- (c) Undecomposed $AgBr$ forms a soluble complex with hypo
$ AgBr+2 Na_2 S_2 O_3 \to Na_3[Ag(S_2 O_3)_2]+NaBr $
$ \text{ soluble complex } $
BETA
