Q. The formula of the product formed, when sodium thiosulphate solution is added to silver bromide is
A) $Ag_{2}S_{2}O_{3}$
B) $Ag_{2}S$
C) $Na_{3}\left\lbrack Ag\left( S_{2}O_{3} \right)_{2} \right\rbrack$
D) $Ag_{3}\left\lbrack Na\left( S_{2}O_{3} \right)_{2} \right\rbrack$
Explanation
(c)
When sodium thiosulphate solution is added to AgBr, then sodium argentothiosulphate is obtained.
$AgBr + 2Na_{2}S_{2}O_{3}\ \longrightarrow Na_{3}\left\lbrack Ag\left( S_{2}O_{3} \right)_{2} \right\rbrack + NaBr$
(colourless)
sodium argentothiosulphate
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.