Sodium thiosulphate is used in photography because of its
A.
reducing behaviour
B.
oxidising behaviour
C.
complex forming behaviour
D.
reaction with light
Answer :
complex forming behaviour
Solution :
Hypo solution $$\left( {N{a_2}{S_2}{O_3}} \right) $$ is used in photography to remove the unaffected $$AgBr$$ in the form of soluble complex.
$$AgBr + 2N{a_2}{S_2}{O_3} \to \mathop {N{a_3}\left[ {Ag{{\left( {{S_2}{O_3}} \right)}_2}} \right]}\limits_{{\text{Sod}}{\text{.}}\,{\text{argentothiosulphate}}} + NaBr$$
Releted MCQ Question on Inorganic Chemistry >> D and F Block Elements
Releted Question 1
When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is