You may wish to balance the ENTIRE equation but I'll leave that to you. I'll balance just the part that matters.
5Fe*2+ + MnO4^- ==> Mn^2+ + 5Fe^3+
mols KMnO4 = M x L = ? mols in the 20 mL sample. How many mols KMnO4 will that be in the 500 mL sample? That's ?mols in 20 mL x (500/20) = ? and that's the mols FeSO4.7H2O in the original sample of x grams.
Convert mols FeSO4.7H2O to grams.
grams = mols x molar mass = ?
ferrous sulfate was prepared by dissolution of x grams p feso4.7H20 crystals in 500 ml water. 20 ml of this solution necessities 5 ml of 0.1mol/l kmn04 for the pink color to persist. find x
1 answer
1 answer