When the equation Fe +O2 --> Fe2O3 is balanced the coefficient for O2 is: 3. Fe + O₂ =Fe₂O₃ Balanced Equation In this video, we will learn how to balance Fe + O₂ =Fe₂O₃ reaction. That makes 6. Triferium tetroxide is a chemical compound of formula Fe3O4. When Ba + HCl --> BaCl2 + H2 is balanced, what is the coefficient on HCl. activity series. So for every one mole Fe, there is 1 mole Fe2O3, and you can say this for the reverse. The equation H3PO4 + 3KOH --> K3PO4 + H2O is and example of which type of reaction. For instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but PhC2H5 + O2 = PhOH + CO2 + H2O will; Compound states [like (s) (aq) or (g)] are not required. A mole ratio is the ratio of one product or reactant to another in the equation. Anthropology Balance the rest of the equation. The balanced equation will appear above. It is an iron oxide present in the natural environment in the form of magnetite, a crystallized black mineral; in the laboratory, it is generally in the form of a black powder. Use uppercase for the first character in the element and lowercase for the second character. Solution for In Fe + O2 --> Fe2O3 what is the coefficient for Fe? That's 2. Then you can say 1 mole O2 to 1 mole Fe2O3, and the reverse. In many cases a complete equation … Balancing the simple molecules first, in this case the O2. Fe + 3O 2 → Fe 2 O 3 there are now 6 O atoms on the left, there must also be 6 O atoms on the right.. Fe + 3O 2 → 2Fe2O 3. Social Science. That makes 4. Then you can say 1 mole Fe to mole O2, and the reverse. The right answer is 4 Fe + 3O2 → 2 Fe2O3. 2. To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. If you do not know what products are enter reagents only and click 'Balance'. A list of metals in order of decreasing reactivity. Fe + O2 → Fe2O3 is the unbalanced form of chemical reaction. Examples: Fe, Au, Co, Br, C, O, N, F. Ionic charges are not yet supported and will be ignored.