The compound sodium thiosulfate pentahydrate,Na2S2O3 · 5 H2O, isimportant commercially to the photography business as \"hypo,\"because it has the ability to dissolve unreacted silver salts fromphotographic film during development. Sodium thiosulfatepentahydrate can be produced by boiling elemental sulfur in anaqueous solution of sodium sulfite.
S8(s) +Na2SO3(aq) +H2O(l) →Na2S2O3 · 5H2O(s) (unbalanced)
What is the theoretical yield of sodium thiosulfate pentahydratewhen 3.21 g of sulfur is boiled with 15.7 g of sodiumsulfite?
Sodium thiosulfate pentahydrate is very soluble in water. What isthe percent yield of the synthesis if a student doing thisexperiment is able to isolate (collect) only 11.7 g of theproduct?
2.
2 KClO3(s) → 2 KCl(s) + 3O2(g)
If 4.99 g of potassium chlorate is heated, what theoretical massof oxygen gas should be produced?
If only 1.10 g of oxygen is actually obtained, what is the percentyield?
please help !!
