Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

In photography sodium thiosulphate is used as

$\begin{array}{1 1}(a)\;\text{Complexing agent}&(b)\;\text{Reducing agent}\\(c)\;\text{Oxidising agent}&(d)\;\text{None of these}\end{array}$

Can you answer this question?

1 Answer

0 votes
In order to make the image permanent, it is necessary to remove the unreduced silver bromide from the surface of the developed film. This operation is called fixing of image. Fixing is done by dipping the developed film or plate in sodium thiosulphate (hypo) solution. the hypo solution dissolves the unreduced silver bromide by forming a complex. Thus sodium thiosulphate acts as a complexing agent.
answered Jan 31, 2014 by sreemathi.v
edited Jul 30, 2014 by balaji.thirumalai

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App