Chemistry

posted by Stockton

Over the years, the thermite reaction (mixing of solid iron (III) oxide with aluminum metal) has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors.

A. Write a balanced equation representing the reaction.

B. What masses of iron (III) oxide and aluminum must be used to produce 15.0 g if iron?

C. What is the maximum mass of aluminum oxide that could be produced.

  1. DrBob222

    Fe2O3 + 2Al ==> Al2O3 + 2Fe

    B.
    a. mols Fe in 15.0g Fe = grams/molar mass
    b. Using the coefficients in the balanced equation, convert mols Fe to mols Fe2O3.
    c. Convert mols Fe2O3 to g. g = mols x molar mass

    For Al, use the same procedure but in b convert mols Fe to mols Al and go from therre.

    C.
    Same procedure. Convert mols Fe to mols Al2O3 then convert to grams Al2O3.

  2. Evelyn

    Complete and balance this reaction to form vanadium (V) oxide
    V(s) + O2(g) 

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