Question

Unreacted silver bromide in photographic plate is removed by the addition of hypo$\left(N{a}_2{S}_2{O}_3\right)$. If true enter 1, esle enter 0.

Answer 1

Unreacted silver bromide in photographic plate is removed by the addition of hypo$\left(N{a}_2{S}_2{O}_3\right)$. A water soluble complx sodium argentothiosulphate is obtained.
$AgBr\left(s\right)+2N{a}_2{S}_2{O}_3\to \underset{\text{Sodium argentothiosulphate}}{N{a}_3\left[Ag\right(S_2{O}_3{)}_2]}+NaBr$