posted by .

This is a back titration question and I'm struggling with it :/ So if you can help me, that would be very appreciated :)
Q. A sample of steel wool was dissolved in excess sulfuric acid. The resulting solution (FeSO4 aq) was then titrated with potassium permanganate. 26.5mL of a 0.18 molL-1 of the permanganate solution was used in a titration with the solution. If the original mass of steel wood was 1.4g. Calculate the percentage of iron in the steel wool. NOTE: Fe2+ ions are oxidised to Fe3+ ions!
Thanks heaps!!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    H20SO4(aq)-> 2H+(aq) + SO4 2- (a) Calculate the hydrogen ion concentration (in mol 1-1) in this solution. Show steps and explain your reasoning Also what is the pH of the sulfuric acid solution nearet whole number You don't have …
  2. Chemistry

    Question: a 25.00 mL. aliquot of a solution containing TI(aq) was treated with K2CrO4. the TI2CrO4 was filtered, washed free of excess precipitation reagent, and dissolved in dilute sulfuric acid. the dichromate ion produced was titrated …
  3. chemistry

    Titration of Vitamin C tablets Prior to titration, Vitamin C samples were dissolved in dilute sulfuric acid, treated with a 60mL portion of 0.3 M KIO3 and excess KI. Given equations: (1) ascorbic acid + I2 + 2H2O <--> dehydroascorbic …
  4. Chemistry

    A chemist heated a sample of steel wool in a burner flame exposed to oxygen in the air. He also heated a sample of steel wool in a container of nearly 100% oxygen. The steel wool sample in the container reacted faster than the other …
  5. Chemistry

    A 2.50 gram sample of bronze was dissolved in sulfuric acid. The copper in the sample reacted with sulfuric acid to form copper sulfate. Cu (s) +2 H2SO4 (aq) -> CuSO4 (aq) +2 H2O (l) The copper sulfate formed in this reaction was …
  6. College Chemistry

    I need help with this question!! a sample of pure KHP weighing .8097g dissolved in water and titrated with 40.25 mL of NaOH solution. The same NaOH solution was used to titrate a solution of a weak diprotic acid H2X. A sample of 0.18694g …
  7. chemistry

    A solution is 40% acetic acid by mass. The density of this solution is 1.049 g/mL. Calculate the mass of pure acetic acid in 170 mL of this solution at 20 C. Answer in units of g The density of a solution of sulfuric acid is 1.29 g/cm3 …
  8. Chem

    The Fe2 (55.845 g/mol) content of a 2.271 g steel sample dissolved in 50.00 mL was determined by tiration with a standardized 0.100 M potassium permanganate (KMnO4, 158.034 g/mol) solution. The titration required 28.05 mL to reach …
  9. Chemistry

    Enough concentrated sulfuric acid solution was added to provide 3 grams of sulfuric acid which dissolved i4 grams of pure fluorapatite. How much excess sulfuric acid was used?
  10. Chemistry

    what would the concentration of the solution of a sulfuric acid be titration of a 25.0 ml sample of acid required 20.00 ml of a 0.20 naoh standardized solution for it to become neutralized

More Similar Questions