posted by Annie on .
in the synthesis of FeC2O4 (dot) 2H2O, which reagent would be the limiting reagent? FeSO4(NH4)2SO4 (dot) 6H2O - 2.68g. H2C2O4 (dot) 2H2O - 1.99g.
I just want to know how the H2Os would effect finding the limiting reagent. As in do they change the ratio? The molecular mass?
The H2O molecules (water of crystallization) do not change the ratio (as long as it isn't the ratio of the water molecules); they do change the molar mass of the parent compound. For example, CuSO4 has a molar mass of about 159.6 while CuSO4.5H2O has a molar mass that is 5*18 (about 90) higher for about 249.7 g/mol.
Thank you :)