Chemical Equation Balancer

Balance chemical equations and calculate stoichiometry. Find limiting reactants and product yields.

Reactant 1 Coefficient

Reactant 1 Moles

Reactant 2 Coefficient

Reactant 2 Moles

Product 1 Coefficient

Product 2 Coefficient

Tab to move between fields

Product 1 Produced

4 moles

Limiting Reactant

Product 2 Produced2 moles

Excess Reactant1 moles

How to Use This Calculator

Enter stoichiometric coefficients and mole amounts for up to two reactants.
Set the product 1 and product 2 coefficients from the balanced chemical equation.
Review the limiting reactant, excess reactant, and moles of each product formed.
Check excess reactant remaining after the reaction goes to completion.
Use this to calculate theoretical yield before scaling up a reaction.

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Formula

Limiting Reactant = min(moles/coefficient)

Calculate molar mass, convert between grams and moles, and find the number of molecules for elements and common compounds.

Calculate pH, pOH, hydrogen ion concentration, and hydroxide concentration. Determine if a solution is acidic, neutral, or basic.

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