Examples of Balanced Chemical Equations

Examples of Balanced Chemical Equations Writing balanced chemical equations is essential for chemistry class. Here are examples of balanced equations you can review or use for homework. Note that if you have 1 of something, it does not get a coefficient or subscript. The word equations for a few of these reactions have been provided, though most likely youll be asked to provide only the standard chemical equations. 6 CO2 6 H2O → C6H12O6 6 O2 (balanced equation for photosynthesis)6 carbon dioxide 6 water yields 1Â  glucose 6 oxygen 2 AgI Na2S → Ag2S 2 NaI2 silver iodide 1 sodium sulfide yields 1 silver sulfide 2 sodium iodide Ba3N2 6 H2O → 3 Ba(OH)2 2 NH3 3 CaCl2 2 Na3PO4 → Ca3(PO4)2 6 NaCl 4 FeS 7 O2 → 2 Fe2O3 4 SO2 PCl5 4 H2O → H3PO4 5 HCl 2 As 6 NaOH → 2 Na3AsO3 3 H2 3 Hg(OH)2 2 H3PO4 → Hg3(PO4)2 6 H2O 12 HClO4 P4O10 → 4 H3PO4 6 Cl2O7 8 CO 17 H2 → C8H18 8 H2O 10 KClO3 3 P4 → 3 P4O10 10 KCl SnO2 2 H2 → Sn 2 H2O 3 KOH H3PO4 → K3PO4 3 H2O 2 KNO3 H2CO3 → K2CO3 2 HNO3 Na3PO4 3 HCl → 3 NaCl H3PO4 TiCl4 2 H2O → TiO2 4 HCl C2H6O 3 O2 → 2 CO2 3 H2O 2 Fe 6 HC2H3O2 → 2 Fe(C2H3O2)3 3 H2 4 NH3 5 O2 → 4 NO 6 H2O B2Br6 6 HNO3 → 2 B(NO3)3 6 HBr 4 NH4OH KAl(SO4)2Â ·12H2O → Al(OH)3 2 (NH4)2SO4 KOH 12 H2O Check Equations To Make Sure They Are Balanced When you balance a chemical equation, its always a good idea to check the final equation to make sure it works out. Perform the following check:Add up the numbers of each type of atom. The total number of atoms in a balanced equation will be the same on both sides of the equation. The Law of Conservation of Mass states the mass is the same before and after a chemical reaction.Make sure you accounted for all types of atoms. Elements present on one side of the equation need to be present on the other side of the equation.Make sure you cant factor out the coefficients. For example, if you could divide all of the coefficients on both sides of the equation by 2, then you may have a balanced equation, but not the simplest balanced equation. Sources James E. Brady; Frederick Senese; Neil D. Jespersen (2007). Chemistry: Matter and Its Changes. John Wiley Sons. ISBN 9780470120941.Thorne, Lawrence R. (2010). An Innovative Approach to Balancing Chemical-Reaction Equations: A Simplified Matrix-Inversion Technique for Determining the Matrix Null Space. Chem. Educator. 15: 304–308.

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