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About

In quantitative chemistry, precision is binary: an equation is either perfectly balanced, or it is useless. This tool transcends simple "guess-and-check" methods by employing a deterministic Algebraic Matrix Solver. Whether you are calculating industrial yields or solving complex redox half-reactions for a thesis, this engine guarantees adherence to the Law of Conservation of Mass.

Why this tool is different: Unlike basic calculators that simply output coefficients, this application includes a full Stoichiometry Suite. It automatically calculates Molar Masses, identifies reaction types (Synthesis, Decomposition, Combustion), and - if you provide masses - determines the Limiting Reagent and theoretical yield instantly. It supports polyatomic ions (e.g., SO42-) and provides a visualization of the molecular geometry.

chemistry stoichiometry reaction balancer limiting reagent molar mass calculator redox

Formulas

The core algorithm converts chemical symbols into a linear algebra problem Ax = 0. We define the conservation vector for every element E as:

nj=1 cj aij = 0

Where cj is the stoichiometric coefficient for compound j, and aij is the number of atoms of element i in compound j (positive for reactants, negative for products). The solver computes the Null Space of this matrix to find the integer coefficients.

Reference Data

Reaction CategoryEquation ExampleStoichiometric RatiosTechnique Used
Hydrocarbon CombustionC3H8 + O2 CO2 + H2O1 : 5 : 3 : 4CH-O Balancing Method
Double DisplacementPb(NO3)2 + KI PbI2 + KNO31 : 2 : 1 : 2Ion Exchange Tracking
Synthesis (Redox)Fe + O2 Fe2O34 : 3 : 2Electron Transfer / LCM
DecompositionKClO3 KCl + O22 : 2 : 3Oxygen Balance
Acid-Base NeutralizationH2SO4 + NaOH Na2SO4 + H2O1 : 2 : 1 : 2Proton Transfer
Complex Ion / RedoxMnO4- + Fe2+ + H+ Mn2+ + Fe3+ + H2O1 : 5 : 8 : 1 : 5 : 4Half-Reaction Method (Charge Balance)

Frequently Asked Questions

Algebraically, the solution to a chemical matrix often yields fractions. However, standard chemistry convention requires "Whole Number Integers." Our algorithm finds the Lowest Common Multiple (LCM) of all denominators and multiplies the entire equation by that number to ensure the final result is clean and standard-compliant.
Yes. After balancing the equation, switch to the "Stoichiometry" tab. Enter the mass (in grams) for your reactants. The tool will calculate moles, compare the mole ratios to the balanced coefficients, and highlight exactly which reactant will run out first and how much product will be formed.
Absolutely. Use the caret symbol (^) for charges. Example: `Fe^3+ + e^- -> Fe^2+`. The solver treats "Charge" as a distinct element that must be conserved between the left and right sides of the equation.
This means you are trying to create matter that doesn't exist (Alchemy). For example, if you input `H2 + O2 -> Au` (Gold), the system cannot balance Hydrogen or Oxygen against Gold. Check that every element on the left appears on the right.