The right answer is 4 Fe + 3O2 → 2 Fe2O3. Anthropology 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. Use uppercase for the first character in the element and lowercase for the second character. The equation H3PO4 + 3KOH --> K3PO4 + H2O is and example of which type of reaction. Fe + O2 → Fe2O3 is the unbalanced form of chemical reaction. activity series. If you do not know what products are enter reagents only and click 'Balance'. That makes 6. In many cases a complete equation … Balance the rest of the equation. 2. Then you can say 1 mole Fe to mole O2, and the reverse. Solution for In Fe + O2 --> Fe2O3 what is the coefficient for Fe? A list of metals in order of decreasing reactivity. When the equation Fe +O2 --> Fe2O3 is balanced the coefficient for O2 is: 3. When Ba + HCl --> BaCl2 + H2 is balanced, what is the coefficient on HCl. To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. Balancing the simple molecules first, in this case the O2. That's 2. So for every one mole Fe, there is 1 mole Fe2O3, and you can say this for the reverse. 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. Fe + O₂ =Fe₂O₃ Balanced Equation In this video, we will learn how to balance Fe + O₂ =Fe₂O₃ 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. That makes 4. Then you can say 1 mole O2 to 1 mole Fe2O3, and the reverse. Social Science. The balanced equation will appear above. Examples: Fe, Au, Co, Br, C, O, N, F. Ionic charges are not yet supported and will be ignored. Triferium tetroxide is a chemical compound of formula Fe3O4. A mole ratio is the ratio of one product or reactant to another in the equation.