Sodium thiosulphate,Na_2S_2O_3 cdot 5H_2O is | vedclass

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

Question

(C) In photography,sodium thiosulphate $(Na_2S_2O_3)$ is used as a 'fixing agent'.After the development of the film,the unexposed silver bromide $(AgB

Vedclass · Accepted Answer

remove undecomposed $AgBr$ as soluble silver thiosulphate complex

Vedclass · Answer

(C) In photography,sodium thiosulphate $(Na_2S_2O_3)$ is used as a 'fixing agent'.After the development of the film,the unexposed silver bromide $(AgBr)$ remains on the film.Sodium thiosulphate reacts with this unexposed $AgBr$ to form a soluble complex,sodium dithiosulphatoargentate$(I)$,which can be washed away.The reaction is: $AgBr(s) + 2Na_2S_2O_3(aq) \rightarrow Na_3[Ag(S_2O_3)_2](aq) + NaBr(aq)$.

Sodium thiosulphate,$Na_2S_2O_3 \cdot 5H_2O$ is used in photography to

Similar Questions

Coordination compounds have significant importance in biological systems. In this context,which of the following statements is incorrect?

Write the application of coordination compounds in black and white photography.

The ligands in the anti-cancer drug $cis$-platin are:

State the importance of coordination compounds in photography.

The solution of $II A$ group precipitate in dilute $HNO_3$ when treated with $NH_4OH$ becomes blue because of the presence of

Vedclass Test Series

Exam Paper Generator

Online Exam Module