Ask Question
20 August, 00:41

For the reaction? Fe+? H2o ⇀↽? Fe3o4+? H2, a maximum of how many grams of fe3o4 could be formed from 354 g of fe and 839 g of h2o? Answer in units of g

+2
Answers (2)
  1. 20 August, 01:35
    0
    The given reaction is:

    3Fe + 4H2O → Fe3O4 + 4H2

    Given:

    Mass of Fe = 354 g

    Mass of H2O = 839 g

    Calculation:

    Step 1 : Find the limiting reagent

    Molar mass of Fe = 56 g/mol

    Molar mass of H2O = 18 g/mol

    # moles of Fe = mass of Fe/molar mass Fe = 354/56 = 6.321 moles

    # moles of H2O = mass of h2O/molar mass of H2O = 839/18 = 46.611 moles

    Since moles of Fe is less than H2O; Fe is the limiting reagent.

    Step 2: Calculate moles of Fe3O4 formed

    As per reaction stoichiometry:

    3 moles of Fe form 1 mole of Fe3O4

    Therefore, 6.321 moles of Fe = 6.321 * 1 / 3 = 2.107 moles of Fe3O4

    Step 4: calculate the mass of Fe3O4 formed

    Molar mass of Fe3O4 = 232 g/mol

    # moles = 2.107 moles

    Mass of Fe3O4 = moles * molar mass

    = 2.107 moles * 232 g/mol = 488.8 g (489 g approx)
  2. 20 August, 01:36
    0
    The grams of Fe3O4 that could be formed from 354 g of fe and 839 g of H2O is 489.2 grams

    calculation

    step 1: write a balanced chemical equation

    that is 3Fe + 4 H2O → Fe3SO4 + 4H2

    from the reaction above 3 moles of Fe reacted with 4 moles of water therefore Fe is the limiting reagent

    Step2: find the number of mole of each reactant

    that is mole = mass / molar mass

    moles of Fe = 354 g/55.85 g/mol = 6.338 mole

    moles of H2O = 839 g / 18 g/mol = 46.61 moles

    since Fe is the limiting reagent by use of mole ratio between Fe : Fe3O4 which is 3:1 therefore the moles of Fe3O4 = 6.338 moles x 1/3=2.113 moles

    mass of Fe3O4 is = moles x molar mass

    = 2.113 x231.53 g/mol=489.2 grams
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “For the reaction? Fe+? H2o ⇀↽? Fe3o4+? H2, a maximum of how many grams of fe3o4 could be formed from 354 g of fe and 839 g of h2o? Answer ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers