Asked by vicky

A solution of thiosulfate ions has been prepared by dissolving 4.5g of Na2S2O3.5H2O in 250 ml of solution.
Calculate the concentration of the thiosulfate ions S2O3^2- in the solution
Answered by DrBob222
mols Na2S2O3.5H2O = grams/molar mass = ?
Then M = mols/L.